1girl, ahoge, armpits, ass, blue_archive, blue_one-piece_swimsuit, blurry, blurry_background, border, covered_navel, demon_horns, dutch_angle, feet_out_of_frame, flat_chest, gun, hair_ornament, hairclip, halo, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, innertube, kouda_hayato_(e-gis), legs, light_purple_hair, long_hair, looking_at_viewer, low_wings, lying, machine_gun, mg42, multiple_horns, name_tag, ocean, official_alternate_costume, on_back, one-piece_swimsuit, parted_bangs, purple_eyes, school_swimsuit, shadow, shiny_skin, smile, solo, sweatdrop, swimsuit, thighs, weapon, whistle, whistle_around_neck, white_border, wings