surtr (arknights), surtr (colorful wonderland) (arknights), arknights, absurdres, commentary, highres, 1girl, artist name, bare shoulders, bikini, black bikini, blue background, breasts, cleavage, closed mouth, criss-cross halter, demon horns, detached sleeves, eyewear on head, halterneck, horns, long hair, looking at viewer, navel, official alternate costume, purple eyes, red hair, side-tie bikini bottom, simple background, solo, stomach, sunglasses, swimsuit, thigh strap, user trcu5847