cottone_(highjethoo), agnes_tachyon_(umamusume), year_2024, 1girl, ahoge, animal_ears, brown_hair, earrings, hair_between_eyes, horse_ears, horse_girl, horse_tail, jacket, jewelry, lab_coat, long_hair, long_sleeves, looking_at_viewer, necktie, open_clothes, red_eyes, shirt, short_hair, short_necktie, simple_background, single_earring, sleeves_past_fingers, sleeves_past_wrists, smile, solo, sweater_vest, tail, test_tube, white_background, yellow_sweater_vest, absurdres, highres, umamusume