1girl, balloon, bare_shoulders, blue_background, blurry, bow, claudia_katsumoto_(artist), depth_of_field, dress, earrings, gradient_background, happy_birthday, holding, holding_balloon, horns, indie_virtual_youtuber, jewelry, necklace, ponytail, portrait, see-through, solo, sylvia_sorano, virtual_youtuber, yellow_bow, yellow_dress, yellow_eyes