I recommend 'The Witch Has Pursued Me For 5,000 Years' to you. The main character of this book was a mage. He was pursued by a girl for three thousand years and eventually died. Two thousand years later, he was resurrected and began to gradually integrate into modern society. However, he found out that the boss of the job he found was actually the girl who had pursued him back then. This novel is filled with a relaxed and sweet atmosphere. You are welcome to read it. I hope you like my recommendation.