Rule 34 Dev - 1girl 213 armpits bikini black_bikini black_hair breasts cleavage hair_tie_in_mouth halterneck highres leaning_back mahouka_koukou_no_rettousei medium_breasts midriff mouth_hold navel red_eyes saegusa_mayumi side-tie_bikini_bottom solo swimsuit tying_hair|12380462757