1girl :o amagi_yukiko arms_at_sides ass_visible_through_thighs bangs bespectacled bikini black_eyes black_hair breasts cleavage collarbone cowboy_shot front-tie_top glasses hairband head_tilt long_hair looking_at_viewer navel parted_lips persona persona_4 red-framed_eyewear seiru_(prairie) side-tie_bikini_bottom simple_background skindentation small_breasts solo straight_hair string_bikini surprised swimsuit wading water wet white_background white_bikini