1girl artist_name bangs bat_wings black_pantyhose black_skirt black_vest blue_background blush book chibi closed_mouth floating full_body head_wings holding holding_book koakuma kuroteru long_hair long_sleeves looking_at_viewer necktie pantyhose red_eyes red_hair red_necktie shirt simple_background skirt solo touhou twitter_username vest white_background white_shirt wing_collar wings