10s 1girl 2018 aqua_hair areola_slip areolae artist_name bang_dream! blush bottomless braid covering covering_crotch dated erect_nipples eyebrows_visible_through_hair green_eyes grin hikawa_hina leaning_forward looking_at_viewer medium_hair no_bra open_clothes parted_lips sakamata simple_background smile solo standing teeth twin_braids white_background