1girl badminton badminton_racket bike_shorts bike_shorts_under_skirt birthday black_shorts black_skirt blush brown_eyes brown_hair circle collared_shirt commentary_request cropped_legs dated hasegawa_fumi holding holding_racket katatsuka_kouji looking_at_viewer open_mouth racket red_shirt shirt short_hair short_sleeves shorts skirt solo standing white_background yuyushiki