1girl, animal_ear_fluff, animal_ears, black_choker, blue_eyes, blush, choker, crop_top, flask, hair_bun, hakui_koyori, hakui_koyori_(1st_costume), holding, holding_flask, holding_test_tube, hololive, lab_coat, long_hair, long_sleeves, looking_away, midriff, mishima_kurone, navel, necktie, open_mouth, pink_hair, pink_necktie, smoke, solo, test_tube, very_long_hair, virtual_youtuber