1girl :3 anniversary bangs blue_eyes blue_ribbon cleavage_cutout clothing_cutout crescent crescent_hair_ornament crown demon_girl demon_horns demon_tail demon_wings double_bun dress elbow_rest frilled_dress frills hair_bun hair_ornament hair_spread_out hand_on_own_cheek hand_on_own_face head_rest heterochromia highres horns long_hair looking_at_viewer mini_crown nijisanji otou_mamayo red_eyes red_hair ribbon short_dress smile solo tail tail_ornament tail_ribbon two_side_up very_long_hair virtual_youtuber white_dress window wings yuzuki_roa