1girl, alternate_costume, aru_(blue_archive), bad_pixiv_id, bare_shoulders, beach, bikini, bikini_under_clothes, black_bikini, blue_archive, breasts, cleavage, collarbone, demon_horns, denim, denim_shorts, halo, halterneck, hand_on_own_hip, horns, jewelry, large_breasts, light_smile, looking_at_viewer, navel, necklace, okano_yuuto, open_mouth, outdoors, ponytail, shirt, short_shorts, shorts, side-tie_bikini_bottom, sideboob, solo, splashing, stomach, string_bikini, swimsuit, tied_shirt, visor_cap, whistle, white_shirt