1girl, animal_ears, asymmetrical_legwear, asymmetrical_sleeves, balloon, black_hair, blue_eyes, collar, confetti, detached_sleeves, gloves, hakos_baelz, hakos_baelz_(1st_costume), hamllock, happy_birthday, heart, hololive, hololive_english, long_hair, midriff, miniskirt, mismatched_legwear, mismatched_sleeves, mouse_ears, mouse_girl, mouse_tail, multicolored_hair, navel, red_hair, single_glove, sitting, skirt, smile, solo, spiked_collar, spikes, streaked_hair, tail, twintails, virtual_youtuber, white_hair