1girl, arknights, bare_shoulders, bikini, bikini_bottom_pull, breasts, cleavage, criss-cross_halter, demon_girl, demon_horns, hair_rings, halterneck, horns, kochiya_(gothope), long_hair, midriff, navel, official_alternate_costume, partially_submerged, pulled_by_self, purple_eyes, red_hair, standing, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap