1girl, ailae, ass, backlighting, blue_archive, blurry, demon_girl, demon_horns, demon_wings, depth_of_field, forehead, from_behind, hair_ornament, hairclip, halo, head_tilt, hina_(blue_archive), hina_(swimsuit)_(blue_archive), holding, horns, in_water, lifebuoy, long_hair, looking_at_viewer, looking_back, nape, ocean, official_alternate_costume, old_school_swimsuit, one_side_up, parted_bangs, purple_eyes, school_swimsuit, sidelocks, sleeveless, solo, swimsuit, v-shaped_eyebrows, white_hair, wings