oguri cap and tamamo cross (umamusume) drawn by hawawa_(hawawauma)

2girls ahoge animal_ears black_pantyhose blue_boots blue_eyes blue_hairband blue_jacket blue_sailor_collar blue_skirt blue_sports_bra blush boots breasts brooch carrying character_name ear_covers ear_ornament fang fingerless_gloves gloves grey_hair grey_tail hair_between_eyes hairband happy_birthday hawawa_(hawawauma) headband highres horse_ears horse_girl horse_tail jacket jewelry lightning_bolt_print lightning_bolt_symbol long_hair long_sleeves midriff multicolored_hair multicolored_hairband multiple_girls neckerchief oguri_cap_(starlight_beat)(umamusume) oguri_cap(umamusume) on_shoulder open_clothes pants pantyhose pleated_skirt red_headband red_neckerchief sailor_collar shirt shoulder_carry skirt small_breasts smile sports_bra star_brooch striped_clothes striped_hairband tail tamamo_cross_(fast_as_lightning)(umamusume) tamamo_cross(umamusume) thumbs_up two-tone_hairband umamusume very_long_hair white_boots white_jacket white_pants white_shirt