Rule 34 Dev - 1girl bra breasts brown_eyes cellphone closed_mouth cowboy_shot frown girls_und_panzer grey_bra grey_panties groin hand_in_own_hair highres holding holding_phone kawanishi_shinobu looking_at_viewer lowleg lowleg_panties navel panties phone ponytail short_hair short_ponytail simple_background small_breasts smartphone solo standing tanaka_rikimaru underwear underwear_only white_background|25916160816