Rule 34 Dev - 1girl black_choker blonde_hair blush breasts brown_eyes choker collarbone hair_ribbon happy_birthday heterochromia highres hoshikawa_sara hoshikawa_sara_(1st_costume) medium_breasts nijisanji off_shoulder open_mouth ponytail red_eyes ribbon shirt smile so_nagi_(artist) solo tank_top tied_shirt virtual_youtuber white_tank_top|13954915845