1girl, d, ahoge, beach, bikini, blue_archive, blue_eyes, blue_sky, cloud, cloudy_sky, day, fang, frilled_bikini, frills, hair_between_eyes, hayana_neru, heterochromia, horizon, hoshino_(blue_archive), hoshino_(swimsuit)_(blue_archive), inflatable_toy, inflatable_whale, long_hair, looking_at_viewer, low_twintails, navel, ocean, official_alternate_costume, open_mouth, outdoors, pink_hair, sidelocks, sitting, sky, sleeveless, smile, solo, spread_legs, stomach, swimsuit, twintails, white_bikini, yellow_eyes