trainer and buena vista (umamusume) drawn by tofu_thunder

1boy absurdres animal_ears blush braid breast_padding breasts brown_hair brown_skirt buena_vista_(casual)(umamusume) buena_vista(umamusume) buena_vista_(umamusume)(cosplay) casual checkered_hairband collarbone commentary_request cosplay crossdressing crossdressing(mtf) ear_covers hair_between_eyes hairband highres horse_ears horse_girl horse_tail long_sleeves looking_at_viewer male_focus mars_symbol medium_breasts open_mouth purple_eyes seiza simple_background sitting skirt solo sweatdrop sweater tail tofu_thunder trainer_(umamusume) translation_request trap umamusume white_sweater yellow_hairband