1girl, armlet, bare_shoulders, black_hair, blue_eyes, bouquet, bow, bow_skirt, breasts, clothing_cutout, flower, gloves, halter_shirt, halterneck, hat, holding, holding_bouquet, hololive, hololive_idol_uniform, layered_skirt, medium_breasts, milestone_celebration, mini_hat, mini_top_hat, miniskirt, navel, navel_cutout, official_alternate_costume, oozora_subaru, short_hair, skirt, skirt_set, sleeveless, solo, sunflower, swept_bangs, top_hat, virtual_youtuber, white_bow, white_gloves, white_skirt, wrist_cuffs, yellow_headwear, yellow_skirt, yukijirushi_e