bangs bat_wings blue book breasts buttons crotch_seam demon_girl formal full_body furrowed_eyebrows head_wings kamukamu_(ars) knees koakuma large_breasts long_hair looking_at_viewer miniskirt monochrome open_mouth panties panties_under_pantyhose pantyhose pantyshot pencil_skirt see-through side_slit simple_background sketch skirt skirt_suit solo squatting suit touhou underwear vest white_background wings