Comprehensive: The peaceful daily life of the strongest human being who opens a restaurant

Once saved the world, as the strongest human being, he decided to retire after the battle, open a restaurant, and spend a peaceful day; learn how to cook during the day, and open for business at night.But he soon discovered that the customers who came to the store were a little different.Nakiri Erina, who came here as an assistant, always gives amazing advice;There is also a beautiful blonde girl who likes to draw all night in the store, Eri Sawamura;From the secretary of Liyue·Yuehaiting, a girl named Gan Yu likes his cooking;There are also some ninjas in Konoha Village who have heard his legends, and they all want to worship him as a teacher;Add to that the occasional odder customer.A slime whose whole body looks like jelly...Always like to shout about the righteous navy...A dragon maid who complains that humans don't like her tail...(In daily life, there are few battles, and occasionally the strongest human strength will be displayed)