2girls arms_behind_back bangs bare_shoulders between_legs black_eyes black_one-piece_swimsuit blush_stickers breasts brown_eyes brown_hair collarbone dot_nose flat_chest full_body hair_bobbles hair_flaps hair_ornament hand_between_legs highres kneeling kokaki_mumose kuroshio_current light_brown_hair long_hair looking_at_viewer low_ponytail multiple_girls nagi_akasa nagi_shirosumire no_sclera one-piece_swimsuit open_mouth parted_lips raised_eyebrows school_swimsuit short_twintails sideways_glance simple_background sketch small_breasts smile swimsuit thighhighs twintails very_long_hair white_background white_thighhighs