1girl, arm_support, beach, blue_archive, blue_sky, blurry, cloud, cloudy_sky, collarbone, demon_girl, demon_horns, demon_wings, depth_of_field, dong_hawn, hair_ornament, hairclip, halo, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horizon, horns, knee_up, long_hair, looking_at_viewer, ocean, official_alternate_costume, old_school_swimsuit, one_side_up, outdoors, parted_bangs, purple_eyes, school_swimsuit, sidelocks, sitting, sky, sleeveless, solo, swimsuit, whistle, whistle_around_neck, white_hair, wings