I recommend "The Super Demon Lord Traversing the Other World" to you. The protagonist of this fantasy novel, Zhou Yuntian, was betrayed by his girlfriend and transmigrated to another world. He was taken into the Demon Sect by a Demon Lord and eventually became a Demon Lord. He entered the Divine Realm, but returned to his original world because of the Heaven and Earth Mirror. The plot of this novel is full of ups and downs and surprises. You will definitely love it! I hope you like my recommendation. Muah ~