arakawa_kei beach bikini blush brown_bikini brown_eyes brown_hair casual_one-piece_swimsuit cloud day food frilled_bikini frills front-tie_top holding horizon looking_at_viewer miyanaga_teru multiple_girls ocean one-piece_swimsuit open_mouth pink_swimsuit popsicle red_eyes red_hair saki saki_achiga-hen short_hair sky smile sou_(mgn) standing swimsuit thigh_gap water waving