2girls, ahoge, bikini, blue_archive, blush, cloud, cosplay, day, eyewear_on_head, floating, frilled_bikini, frills, genderswap, genderswap_(mtf), halo, hoshino_(blue_archive), hoshino_(blue_archive)_(cosplay), hoshino_(swimsuit)_(blue_archive), inflatable_toy, inflatable_whale, loli, long_hair, look-alike, multiple_girls, ocean, onii-chan_wa_oshimai!, orange_eyes, oyama_mahiro, oyama_mihari, parody, pink_hair, siblings, sisters, sky, sunglasses, swimsuit, water, ziz_(pandora707)