Retired Wizards' Guide to Reemployment

After leaving Sanctuary, the Necromancer finally returned home. After being beaten to death for more than a hundred years, he was able to return home. The mage, who was tired of the life of beating life and death, opened a "toy store" in a small town using the things he usually liked, and provided some toy manufacturing and repair services to earn a meager remuneration to survive... (This book is also known as: "Who said you have to carry it with you to be a grandfather?", "My help is above yours", "The water is getting deeper and deeper, and it is getting harder and harder for me to survive")