1girl ahoge black_shirt black_skirt black_sleeves blurry blurry_background blush buttons character_name detached_sleeves dot_nose drill_hair fang hair_between_eyes kasane_teto looking_at_viewer open_mouth pink_eyes pink_hair red_trim shirt sidelocks signature skin_fang skirt sleeveless sleeveless_shirt smile solo sound_wave twin_drills twintails utau v yuusuke-kun