1girl, animal_ears, bare_arms, bare_shoulders, breasts, brown_hair, cleavage, grin, head_tilt, horse_ears, inaba_(usanopo), knee_up, large_breasts, long_hair, looking_at_viewer, naked_towel, one_eye_closed, onsen, partially_submerged, red_eyes, sirius_symboli_(umamusume), smile, solo, towel, umamusume, water