1girl beach bikini blue_bikini blue_eyes blue_hair blue_skirt blue_sky blush cloud day fleina_note flower full_body gochuumon_wa_usagi_desu_ka? gradient_bikini gradient_skirt hair_bun hat hat_flower hibiscus highres holding innertube kafuu_chino kirara_fantasia kneeling layered_bikini layered_skirt looking_at_viewer medium_hair ocean open_mouth outdoors purple_flower skirt sky solo summer sun_hat sunlight swimsuit yellow_headwear