1boy 5girls :o ball bangs beachball black_hair blonde_hair blue_hair bow brown_hair casual_one-piece_swimsuit competition_swimsuit covered_navel day everyone eyebrows_visible_through_hair game_cg hands_up horizon kannagi_kanata kannagi_towa kannagi_yuu karen_(purple_software) kouzai_aya kujou_himawari lens_flare long_hair looking_at_another medium_hair multiple_girls ocean one-piece_swimsuit one_eye_closed outdoors pink_hair pink_ribbon red_bow ribbon shirtless short_hair swimsuit twintails v_arms water white_swimsuit zinno