1girl, armpits, arms_up, blurry, blurry_background, blush, breasts, grey_sports_bra, idolmaster, idolmaster_million_live!, indoors, locker, locker_room, looking_back, makabe_mizuki, milliani, parted_lips, purple_hair, short_hair, shorts, sidelocks, small_breasts, sports_bra, stained_clothes, steam, steaming_body, stomach, sweat, sweaty_clothes, undressing, wet, yellow_eyes