1girl, alfarejected, armpits, arms_up, bare_shoulders, black_hair, black_sports_bra, blue_eyes, breasts, exercise, hair_between_eyes, kill_la_kill, looking_to_the_side, matoi_ryuuko, messy, multicolored_hair, navel, panties, railing, short_hair, sideboob, signature, simple_background, sleeveless, solo, sports_bra, stomach, streaked_hair, sweat, two-tone_hair, underwear, workout_clothes