1girl, ahoge, bikini, blue-tinted_eyewear, blue_archive, blue_sky, cloud, day, eru_daydream, frilled_bikini, frills, hair_bobbles, hair_ornament, halo, heterochromia, hoshino_(blue_archive), hoshino_(swimsuit)_(blue_archive), inflatable_toy, inflatable_whale, long_hair, low_twintails, navel, official_alternate_costume, pink_hair, sky, solo, stomach, sunglasses, swimsuit, tinted_eyewear, twintails, wading, water, white-framed_eyewear, white_bikini