1girl, ahoge, arms_behind_back, bed, bed_sheet, blue_archive, collarbone, demon_girl, demon_horns, hair_between_eyes, hair_ornament, hairclip, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, long_hair, looking_at_viewer, mitomumitomu, name_tag, official_alternate_costume, old_school_swimsuit, one_side_up, purple_eyes, school_swimsuit, sidelocks, sitting, sleeveless, solo, swimsuit, white_hair