1girl, arknights, arm_up, bikini, breasts, criss-cross_halter, cup, hair_between_eyes, hair_intakes, hair_rings, halterneck, hand_in_own_hair, hand_up, holding, holding_cup, horns, long_hair, looking_at_viewer, mouth_hold, navel, purple_eyes, red_hair, smile, solo, stomach, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, upper_body, very_long_hair, yaohua