Search

(Supports wildcard *)
Tags

1girl :3 ahoge animal_ears bell blush bow breasts brown_hair brown_skirt cat_ears cat_girl cat_tail choker cloud commentary_request cowboy_shot frilled_choker frills hair_bell hair_ornament hair_ribbon highres ichihime japanese_clothes jingle_bell kimono lace-trimmed_sleeves lace_trim long_sleeves looking_at_viewer mahjong_soul medium_bangs obi one_eye_closed open_mouth pink_kimono red_bow red_choker red_eyes red_ribbon red_sash ribbon sash short_hair skirt small_breasts smile solo star_(symbol) tail thumbs_up waist_bow wide_sleeves yuetsu 1girl :3 ahoge animal_ears bell blush bow brown_choker brown_hair brown_skirt cat_ears cat_girl chibi choker commentary_request cowboy_shot cropped_legs dokomon frilled_choker frills hair_bell hair_ornament hair_ribbon highres ichihime japanese_clothes jingle_bell kimono korean_commentary korean_text long_sleeves looking_at_viewer mahjong_soul medium_bangs obi open_mouth pink_kimono red_bow red_eyes red_ribbon red_sash ribbon sash short_hair simple_background skirt smile smug solo translation_request v-shaped_eyebrows waist_bow white_background wide_sleeves 1girl :3 absurdres ahoge animal_ears arm_up bell blush bow brown_hair brown_skirt cat_ears cat_girl cherry_blossoms choker commentary_request cowboy_shot epicmilk falling_petals fang flat_chest frilled_choker frills hair_bell hair_ornament hair_ribbon highres holding holding_mahjong_tile ichihime japanese_clothes jingle_bell kimono lace-trimmed_sleeves lace_trim long_sleeves looking_at_viewer mahjong_soul mahjong_tile medium_bangs obi open_mouth petals pink_choker pink_kimono red_bow red_eyes red_ribbon red_sash ribbon sash short_hair skirt smile solo waist_bow wide_sleeves 1girl ahoge animal_ears arm_up bell blush bow brown_eyes brown_footwear brown_hair brown_skirt bush cat_ears cat_girl cherry_blossoms commentary_request fingernails flat_chest full_body hair_bell hair_ornament hair_ribbon highres holding holding_mahjong_tile ichihime japanese_clothes jingle_bell kimono lace-trimmed_sleeves lace_trim long_sleeves looking_at_viewer mahjong_soul mahjong_tile medium_bangs obi okobo open_mouth pink_kimono pleated_skirt red_bow red_nails red_ribbon red_sash ribbon sandals sash short_hair skirt smile socks solo standing tabi umino_haruka_(harukaumino6) waist_bow white_socks 2girls absurdres ahoge animal_ears bell bikini bow brown_hair cat_ears cat_girl closed_mouth commentary_request cowboy_shot flat_chest hair_bell hair_between_eyes hair_intakes hair_ornament hair_ribbon highres holding holding_mahjong_tile ichihime jingle_bell mahjong mahjong_soul mahjong_table mahjong_tile medium_bangs micro_bikini multiple_girls navel nikaidou_miki obi open_mouth pasties pegina pout red_bow red_eyes red_ribbon red_sash ribbon sash shaded_face short_hair smile solo_focus star_pasties sunburst sunburst_background swimsuit table trembling v-shaped_eyebrows white_bikini 1girl ahoge alternate_eye_color animal_ears bell blue_background blush brown_hair cat_ears cat_girl chibi commentary_request eyes_visible_through_hair frilled_sleeves frills hair_bell hair_between_eyes hair_ornament highres ichihime japanese_clothes jingle_bell kimono long_sleeves looking_at_viewer mahjong mahjong_soul mahjong_tile medium_bangs open_mouth orange_eyes outline pink_kimono purapa short_hair smile smug solo translation_request upper_body white_outline 1girl ahoge alternate_eye_color animal_ears bell blue_background blush brown_hair cat_ears cat_girl chibi commentary_request eyes_visible_through_hair frilled_sleeves frills hair_bell hair_between_eyes hair_ornament highres ichihime japanese_clothes jingle_bell kimono long_sleeves looking_at_viewer mahjong mahjong_soul mahjong_tile medium_bangs open_mouth orange_eyes outline pink_kimono purapa short_hair smile smug solo textless_version upper_body white_outline 1girl 3boys ahoge akagi:_yami_ni_oritatta_tensai akagi_shigeru animal_ears animal_on_head bell big_nose black_gloves black_jacket blazer brown_hair cat cat_ears cat_girl cat_on_head choker closed_mouth commentary_request constricted_pupils crossover dog_boy dog_ears frown fukumoto_mahjong fukumoto_nobuyuki_(style) furry furry_male gloves grey_hair grey_shirt grin hair_bell hair_ornament holding holding_mahjong_tile ichihime jacket japanese_clothes jingle_bell k-suwabe kimono lace-trimmed_choker lace_trim long_sleeves looking_at_viewer mahjong_soul mahjong_tile medium_bangs multiple_boys official_art old old_man on_head pink_kimono pointy_nose red_choker red_eyes serious shirt short_hair smile upper_body v-shaped_eyebrows wanjirou washizu_iwao 1girl akagi:_yami_ni_oritatta_tensai bell brown_hair choker closed_mouth commentary_request fingernails fukumoto_mahjong fukumoto_nobuyuki_(style) hair_bell hair_ornament hair_ribbon ichihime jazz_jack jingle_bell lace-trimmed_choker lace_trim leaning_forward lowres mahjong_soul medium_bangs parody pointy_nose red_choker red_eyes red_nails red_ribbon ribbon sanpaku sharp_fingernails short_hair smile smug solo style_parody translation_request upper_body 1boy 1girl :3 ahoge alternate_breast_size animal_ears bar_censor bell blush breasts brown_choker brown_hair cat_ears cat_girl censored choker collarbone commentary_request hair_bell hair_ornament hair_ribbon hetero highres ichihime japanese_clothes jingle_bell kane-neko kimono lace-trimmed_choker lace_trim mahjong_soul medium_bangs paizuri penis pink_kimono red_eyes red_ribbon ribbon short_hair solo_focus translation_request upper_body 1boy 1girl :3 ahoge alternate_breast_size animal_ears bar_censor bell blush breasts brown_choker brown_hair cat_ears cat_girl censored choker collarbone commentary_request hair_bell hair_ornament hair_ribbon heart hetero highres ichihime japanese_clothes jingle_bell kane-neko kimono lace-trimmed_choker lace_trim mahjong_soul medium_bangs paizuri penis pink_kimono red_eyes red_ribbon ribbon short_hair solo_focus upper_body ! 1boy 1girl :3 ahoge alternate_breast_size animal_ears bar_censor bell blush breasts brown_choker brown_hair cat_ears cat_girl censored choker collarbone commentary_request cum earrings fang hair_bell hair_ornament hair_ribbon hetero highres ichihime japanese_clothes jewelry jingle_bell kane-neko kimono lace-trimmed_choker lace_trim mahjong_soul medium_bangs open_mouth paizuri penis pink_kimono red_eyes red_ribbon ribbon short_hair skin_fang solo_focus upper_body 1boy 1girl :3 ahoge alternate_breast_size animal_ears bar_censor bell blush breasts brown_choker brown_hair cat_ears cat_girl censored choker collarbone commentary_request cum cum_on_body cum_on_breasts facial hair_bell hair_ornament hair_ribbon heart hetero highres ichihime japanese_clothes jingle_bell kane-neko kimono lace-trimmed_choker lace_trim mahjong_soul medium_bangs paizuri penis pink_kimono red_eyes red_ribbon ribbon short_hair solo_focus tongue tongue_out upper_body 1girl :d absurdres ankle_boots backpack_basket bell bloomers boots bow-shaped_hair brown_hair center-flap_bangs child clenched_hand dot_nose dress genshin_impact green_dress hair_bell hair_ornament happy_birthday highres holding holding_polearm holding_weapon light_blush long_sleeves looking_at_viewer mokankan orange_eyes pocket polearm shirt short_hair sidelocks signature simple_background sleeveless sleeveless_dress smile standing standing_on_one_leg stuffed_animal stuffed_toy teeth upper_teeth_only weapon white_background white_bloomers white_footwear white_shirt wide_sleeves yaoyao_(genshin_impact) yuegui_(genshin_impact) 1boy 1girl acronym alcohol asymmetrical_sleeves bar_(place) bar_stool beard_stubble bell black_choker black_shirt bottle breasts brown_eyes brown_hair checkered_floor choker cleavage closed_mouth cocktail_glass commentary criss-cross_halter cup detached_sleeves dress drinking_glass english_text facial_hair fingerless_gloves flower flower_tattoo food fox_mask fruit gallagher_(honkai:_star_rail) gloves hair_bell hair_between_eyes hair_ornament halterneck highres holding holding_cup holding_instrument honkai:_star_rail honkai_(series) hourglass instrument japanese_clothes jingle_bell kimono lamp liquor long_hair long_sleeves looking_at_viewer mask mask_on_head multicolored_nails music neck_bell necktie o-ring official_art orange_(fruit) orange_slice painting_(object) pants piano picture_frame playing_instrument purple_flower purple_necktie purple_pants red_curtains red_dress red_nails red_sleeves saxophone scar scar_on_arm shirt short_sleeves single_glove sitting sitting_on_table sleeveless sleeveless_kimono smile sparkle_(honkai:_star_rail) stool stubble tattoo twintails uneven_sleeves vest white_gloves wine_bottle 1boy 1girl alcohol asymmetrical_sleeves bar_(place) bar_stool beard_stubble bell black_choker black_shirt bottle breasts brown_eyes brown_hair checkered_floor choker cleavage closed_mouth cocktail_glass commentary criss-cross_halter cup detached_sleeves dress drinking_glass facial_hair fingerless_gloves flower flower_tattoo food fox_mask fruit gallagher_(honkai:_star_rail) gloves hair_bell hair_between_eyes hair_ornament halterneck highres holding holding_cup holding_instrument honkai:_star_rail honkai_(series) hourglass instrument japanese_clothes jingle_bell kimono lamp liquor long_hair long_sleeves looking_at_viewer mask mask_on_head multicolored_nails music neck_bell necktie o-ring official_art orange_(fruit) orange_slice painting_(object) pants piano picture_frame playing_instrument purple_flower purple_necktie purple_pants red_curtains red_dress red_nails red_sleeves saxophone scar scar_on_arm shirt short_sleeves single_glove sitting sitting_on_table sleeveless sleeveless_kimono smile sparkle_(honkai:_star_rail) stool stubble tattoo twintails uneven_sleeves vest white_gloves wine_bottle 1girl :d ahoge animal_ears bell bow brown_hair cat_ears commentary_request electricity fangs fingernails hair_bell hair_ornament hair_ribbon holding holding_mahjong_tile ichihime japanese_clothes jingle_bell kimono lace-trimmed_sleeves lace_trim long_sleeves mahjong mahjong_soul mahjong_tile medium_bangs obi open_mouth pink_kimono red_bow red_eyes red_nails red_ribbon red_sash ribbon riva_(wolfox610riva) sash smile solo translation_request upper_body v-shaped_eyebrows waist_bow wide_sleeves 1girl absurdres ahoge animal_ears bell bow brown_eyes brown_hair brown_skirt cat_ears cat_girl choker commentary_request cover cover_page cowboy_shot doujin_cover fingernails frilled_choker frills hair_bell hair_ornament highres ichihime japanese_clothes jingle_bell kimono looking_at_viewer mahjong_soul mahjong_tile medium_bangs neck_ribbon obi open_mouth pink_kimono pleated_skirt red_bow red_choker red_nails red_ribbon red_sash ribbon sash short_hair simple_background skirt smile solo suiten_(mizuiro_tengoku) translation_request waist_bow white_background 1girl :d arm_up backpack_basket bag basket bell black_dress bloomers blunt_bangs blush blush_stickers boots bow-shaped_hair braid brown_eyes brown_hair chibi commentary_request double-parted_bangs dress flower fur-trimmed_boots fur_trim genshin_impact green_jacket hair_bell hair_flower hair_ornament highres holding holding_stuffed_toy jacket jingle_bell long_sleeves medium_hair open_mouth pigumon puffy_long_sleeves puffy_sleeves radish running sidelocks simple_background smile solid_oval_eyes solo sparkle stuffed_animal stuffed_rabbit stuffed_toy tassel white_background white_bloomers white_footwear yaoyao_(genshin_impact) yuegui_(genshin_impact) >_< 1girl :3 ;d backpack_basket basket bell blunt_bangs blush bow bow-shaped_hair braid brown_eyes brown_hair commentary double-parted_bangs eyelashes flower genshin_impact green_background green_jacket hair_bell hair_flower hair_ornament highres holding holding_stuffed_toy hug hugging_object jacket jingle_bell long_sleeves looking_at_viewer medium_hair one_eye_closed open_mouth orange_bow pigumon puffy_long_sleeves puffy_sleeves radish sidelocks simple_background smile solo stuffed_animal stuffed_rabbit stuffed_toy symbol-only_commentary teeth upper_body upper_teeth_only yaoyao_(genshin_impact) yuegui_(genshin_impact) 1girl :d backpack_basket bag basket bell black_dress blunt_bangs blush boots bow bow-shaped_hair braid brown_eyes brown_hair chibi commentary_request dialogues_of_the_desert_sages_(genshin_impact) double-parted_bangs dress eyelashes flower fur-trimmed_boots fur_trim genshin_impact green_jacket hair_bell hair_flower hair_ornament highres holding holding_staff jacket jingle_bell long_sleeves looking_at_viewer medium_hair open_mouth orange_bow pigumon puffy_long_sleeves puffy_sleeves sidelocks simple_background smile solo sparkle staff tassel white_background white_footwear yaoyao_(genshin_impact) 1boy 1girl absurdres ahoge alternate_costume ashiya_douman_(fate) asymmetrical_clothes asymmetrical_hair bell black_eyes black_hair curly_hair earrings fate/grand_order fate_(series) fujimaru_ritsuka_(female) green_kimono hair_bell hair_between_eyes hair_intakes hair_ornament hair_scrunchie heian highres japanese_clothes jewelry kajijii kimono long_hair long_sleeves magatama magatama_earrings midriff_peek multicolored_hair one_side_up orange_eyes orange_hair school_uniform scrunchie short_sleeves side_ponytail skirt split-color_hair two-tone_hair very_long_hair white_hair yellow_scrunchie >_< 1girl :3 :d ameoto_00 artist_name backpack_basket bag basket bell blunt_bangs blush bow bow-shaped_hair braid brown_dress brown_eyes brown_hair closed_eyes closed_mouth commentary cropped_legs double-parted_bangs dress eyelashes flower genshin_impact green_background green_jacket hair_bell hair_flower hair_ornament holding jacket jingle_bell long_sleeves looking_at_viewer open_mouth orange_bow pocket radish sidelocks simple_background smile solid_circle_eyes solo symbol-only_commentary tassel teeth upper_teeth_only white_background yaoyao_(genshin_impact) yuegui_(genshin_impact) 1girl ahoge basket bell black_hair black_socks blue_dress blue_eyes dress flower full_body hair_bell hair_ornament hozuka_(kadokawa) kaiboukan_no._22_(11th_anniversary)_(kancolle) kaiboukan_no._22_(kancolle) kantai_collection official_art smile socks solo standing third-party_source transparent_background twintails white_footwear 1girl ahoge basket bell black_hair black_shorts black_socks blue_dress blue_eyes burnt_clothes dress flower full_body hair_bell hair_ornament hozuka_(kadokawa) hugging_object kaiboukan_no._22_(11th_anniversary)_(kancolle) kaiboukan_no._22_(kancolle) kantai_collection official_art shorts shorts_under_dress smile socks solo standing third-party_source transparent_background twintails white_footwear 1girl akebono_(11th_anniversary)_(kancolle) akebono_(kancolle) bell blush collarbone dress drew_(drew213g) flower full_body green_dress hair_bell hair_between_eyes hair_flower hair_ornament jingle_bell kantai_collection long_hair official_alternate_costume official_art pantyhose purple_eyes purple_flower purple_hair side_ponytail solo tachi-e transparent_background v white_pantyhose 1girl akebono_(11th_anniversary)_(kancolle) akebono_(kancolle) bell blush burnt_clothes collarbone dress drew_(drew213g) flower full_body green_dress hair_bell hair_between_eyes hair_flower hair_ornament hand_on_own_chest jingle_bell kantai_collection long_hair official_alternate_costume official_art pantyhose purple_eyes purple_flower purple_hair side_ponytail solo tachi-e transparent_background white_pantyhose 1girl :3 :d backpack bag basket bell black_skirt blunt_bangs bow-shaped_hair brown_eyes brown_hair chibi chibi_only chinese_commentary commentary_request creature from_side full_body genshin_impact hair_bell hair_ornament highres holding holding_creature huokui knees_up looking_at_viewer no_nose open_mouth orange_footwear shirt short_hair simple_background sitting skirt smile solo white_background white_shirt x_hair_ornament yaoyao_(genshin_impact) yuegui_(genshin_impact) 1girl :d ahoge animal_ears animal_hands bell brown_eyes brown_hair cat_ears cat_girl chim_(dedechimly) commentary_request gloves hair_bell hair_ornament hair_ribbon highres ichihime jingle_bell looking_at_viewer mahjong_soul medium_bangs open_mouth paw_gloves pink_shirt red_ribbon ribbon shirt short_hair simple_background sleeveless sleeveless_shirt smile solo teeth upper_body upper_teeth_only white_background 1boy 1girl animal_ears beard bell brown_hair cat_ears cat_girl censored censored_by_text commentary_request completely_nude dark-skinned_male dark_skin emphasis_lines facial_hair fang full_body hair_bell hair_ornament hair_ribbon ichihime japanese_clothes jingle_bell kimono looking_at_another mahjong_soul nervous_sweating nipples nude open_mouth orange_eyes pink_kimono purple_hair red_ribbon ribbon scared short_hair sweat tonda translation_request upper_body v-shaped_eyebrows 1girl :d absurdres ahoge animal_ears bell bow breasts brown_hair cat_ears cat_girl commentary_request dutch_angle fang frilled_sleeves frills hair_bell hair_intakes hair_ornament hair_ribbon highres holding_tenbou ichihime japanese_clothes jingle_bell kimono long_sleeves looking_afar mahjong mahjong_soul mahjong_table mahjong_tile medium_bangs motion_lines obi open_mouth pink_kimono red_bow red_eyes red_ribbon red_sash ribbon sash short_hair skin_fang small_breasts smile solo table tenbou toryo upper_body waist_bow white_background wide_sleeves 1girl :3 ahoge animal_ears bell blush_stickers bow brown_eyes brown_footwear brown_hair brown_skirt cat_ears cat_girl chibi commentary_request fang full_body hair_bell hair_bow hair_ornament ichihime japanese_clothes jingle_bell kimono looking_at_viewer lowres mahjong mahjong_soul mahjong_tile medium_bangs open_mouth pink_kimono red_bow shoes short_hair simple_background skirt smile socks solo standing tonda transparent_background waist_bow white_socks 1girl :3 ahoge animal_ears bell black_eyes blush_stickers bow brown_hair brown_skirt cat_ears cat_girl chibi commentary_request fang flat_chest foot_up full_body genba_neko_(meme) hair_bell hair_ornament hair_ribbon ichihime japanese_clothes jingle_bell kimono long_sleeves looking_to_the_side lowres mahjong_soul medium_bangs meme obi open_mouth pink_kimono red_bow red_ribbon red_sash ribbon sash short_hair simple_background skirt smile solo thighhighs tonda transparent_background waist_bow white_thighhighs wide_sleeves 1boy 1girl animal_ears bell blue_background blush breasts brown_hair cat_ears cat_girl censored commentary_request fang feet_out_of_frame gradient_background hair_bell hair_ornament hair_ribbon hanput hetero highres ichihime japanese_clothes jingle_bell kimono mahjong_soul medium_bangs mosaic_censoring nipples no_panties nose_blush open_clothes open_kimono orange_eyes pink_kimono pussy red_ribbon ribbon short_hair small_breasts solo_focus thigh_grab v-shaped_eyebrows 1boy 1girl animal_ears bell blue_background blush breasts brown_hair cat_ears cat_girl censored commentary_request erection fang feet_out_of_frame gradient_background hair_bell hair_ornament hair_ribbon hanput hetero highres ichihime imminent_penetration imminent_vaginal japanese_clothes jingle_bell kimono mahjong_soul medium_bangs mosaic_censoring nipples no_panties nose_blush open_clothes open_kimono orange_eyes penis pink_kimono pussy red_ribbon ribbon short_hair small_breasts solo_focus thigh_grab v-shaped_eyebrows 1boy 1girl animal_ears bell blue_background blush breasts brown_hair cat_ears cat_girl censored clenched_teeth commentary_request fang feet_out_of_frame gradient_background hair_bell hair_ornament hair_ribbon hanput hetero highres ichihime japanese_clothes jingle_bell kimono mahjong_soul medium_bangs mosaic_censoring nipples no_panties nose_blush one_eye_closed open_clothes open_kimono orange_eyes penis pink_kimono pussy red_ribbon ribbon sex short_hair small_breasts solo_focus tearing_up teeth thigh_grab v-shaped_eyebrows vaginal 1boy 1girl animal_ears bell blue_background blush breasts brown_hair cat_ears cat_girl censored commentary_request crying crying_with_eyes_open cum cum_in_pussy cum_overflow dashed_eyes ejaculation fang feet_out_of_frame gradient_background hair_bell hair_ornament hair_ribbon half-closed_eyes hanput hetero highres ichihime japanese_clothes jingle_bell kimono mahjong_soul medium_bangs mosaic_censoring nipples no_panties nose_blush open_clothes open_kimono open_mouth orange_eyes penis pink_kimono pussy red_ribbon ribbon sex short_hair small_breasts smile solo_focus tears thigh_grab v-shaped_eyebrows vaginal 1girl ahoge bell blush bow breasts cherry_blossom_print closed_mouth commentary_request covering_own_mouth cowboy_shot detached_sleeves floral_print green_eyes hair_bell hair_between_eyes hair_bow hair_ornament hand_over_own_mouth hands_up highres hololive long_hair looking_at_viewer nontraditional_miko one_side_up paw_print pink_bow pink_hair pink_skirt sakura_miko sakura_miko_(1st_costume) shirt sideboob sideless_kimono simple_background skirt sleeves_past_wrists solo tassel uohara_shinji very_long_hair virtual_youtuber waist_bow white_background white_shirt white_sleeves wide_sleeves x_hair_ornament yellow_bow 1girl ahoge animal_ears bell blush breasts brown_hair brown_skirt cat_ears cat_girl choker collarbone commentary_request embarrassed fang hair_bell hair_ornament hair_ribbon highres ichihime indoors japanese_clothes jingle_bell kimono lace-trimmed_choker lace_trim looking_to_the_side mahjong mahjong_soul mahjong_table mahjong_tile medium_bangs medium_breasts nipples no_bra nose_blush nyanuki obi open_mouth pink_kimono red_choker red_eyes red_ribbon red_sash ribbon sash short_hair skirt sleeves_past_wrists solo_focus strip_game strip_mahjong suuankou table translation_request undressing upper_body 1girl ahoge animal_ears bell blush breasts brown_hair brown_skirt cat_ears cat_girl choker collarbone commentary_request cowboy_shot embarrassed fang hair_bell hair_ornament hair_ribbon highres ichihime indoors japanese_clothes jingle_bell kimono lace-trimmed_choker lace_trim looking_to_the_side mahjong_soul medium_bangs medium_breasts nipples no_bra nose_blush nyanuki obi open_mouth pink_kimono red_choker red_eyes red_ribbon red_sash ribbon sash short_hair skirt sleeves_past_wrists solo_focus undressing 1girl :3 ahoge animal_ears bell bikini blush breasts brown_hair cameltoe cat_ears cat_girl cat_tail choker closed_mouth commentary_request covered_nipples cowboy_shot garoudo_(kadouhan'i) groin hair_bell hair_ornament hair_ribbon ichihime jingle_bell lace-trimmed_choker lace_trim looking_at_viewer lying mahjong_soul mahjong_tile medium_bangs micro_bikini navel on_back on_bed pink_bikini red_choker red_eyes red_ribbon ribbon short_hair small_breasts smile solo swimsuit tail thighhighs trembling white_thighhighs 1girl animal_ears bell blush bow breasts cat_ears cat_girl commentary_request fang frilled_sleeves frills hair_bell hair_ornament hair_ribbon ichihime japanese_clothes jingle_bell kimono long_sleeves mahjong mahjong_soul mahjong_tile medium_bangs obi open_mouth orange_background orange_eyes pink_kimono red_bow red_ribbon red_sash ribbon saliva sash short_hair small_breasts smile smug solo sunburst sunburst_background tonda translation_request twitter_username upper_body upturned_eyes v-shaped_eyebrows waist_bow wide_sleeves yellow_background