3girls, >_<, ahoge, animal_ears, aqua_eyes, bed, blanket, blunt_bangs, bob_cut, bow, bowtie, closed_eyes, comic, ear_covers, hand_on_another's_head, horse_ears, horse_girl, horseshoe_ornament, long_hair, long_sleeves, lying, mihono_bourbon_(umamusume), multiple_girls, nishino_flower_(umamusume), notice_lines, on_side, pillow, purple_sailor_collar, purple_shirt, sailor_collar, sailor_shirt, school_uniform, seiun_sky_(umamusume), serafuku, shared_blanket, shirt, short_hair, single_ear_cover, tracen_school_uniform, umamusume, under_covers, white_bow, white_bowtie, winter_uniform, yonedatomo_mizu