1girl, alternate_costume, aoi_riko, barefoot, black_horns, black_tail, blue_archive, blue_eyes, casual_one-piece_swimsuit, closed_mouth, collarbone, covered_nipples, crossed_bangs, demon_tail, erika_(blue_archive), full_body, hair_between_eyes, halo, heart, heart_hands, highleg, highleg_swimsuit, horns, light_blush, looking_at_viewer, male_swimwear, one-piece_swimsuit, petite, short_hair, simple_background, smile, solo, swim_trunks, swimsuit, tail, white_background, white_hair, white_one-piece_swimsuit