2girls, d, animal_ears, bare_arms, bare_shoulders, bloomers, brushing_another's_hair, brushing_hair, closed_mouth, collarbone, dress, feet_out_of_frame, frills, greyscale, hair_between_eyes, hair_brush, holding, horse_ears, hugging_object, king_halo_(umamusume), knees_up, koruri, long_hair, monochrome, multiple_girls, parted_bangs, pillow, pillow_hug, plaid_pillow, seiun_sky_(umamusume), sitting, sleeveless, sleeveless_dress, smile, twitter_username, umamusume, underwear, unmoving_pattern