After Exchanging Bodies, the Paladin and the Demon King Became HE

Paladin Caroline, who quit the brave team, was swallowed by the deadliest demonized cave in the mainland in order to rescue the affected (innocent X) adventurers and teammates while on duty. Recalling her unhappy life with a broken family and many people, she felt that there was nothing wrong with dying like this. (It's just starting all over again X) However, when she closed her eyes peacefully, the ordinary-looking adventurer easily tore open a slit and pulled her out of the endless black hole. The good news: She survived. The bad news is: she swapped bodies with the adventurer. The bad news is that this adventurer is the Demon King. —— According to legend, the demon king who is bloodthirsty, burns, kills, loots, and commits all kinds of evil is immortal and can only be killed by a brave man holding a holy sword blessed by the God of Light. But there is no historical record of how to deal with a demon king who has changed his body. Caroline looked at the Demon King who, despite his appearance, had his hair tied into a pair of ponytails and wore a light and fluttering gauze skirt. He was very successful in the Knights and was just short of becoming the leader of the Holy Knights and pointing his sword at the Demonic Realm. She closed "A History of Continental Magic" indifferently. Before talking about saving or destroying the world, this devil must get out of her body. What is the shameful attribute of twin tails? Isn't he a stinky man who is not ashamed at all? ! Cold, boring, mournful Paladin x Elegant and exquisite lying flat devil Intention: Live hard and you will eventually be lucky