Once upon a time, there was a Demon Lord who was known as the most fearsome in the world. However, he was so arrogant that even his fellow demons had abandoned him, leaving him to live in loneliness. One day, the most unassuming hero ever arrived and easily defeated the Demon Lord. Instead of killing him, the hero made a request. The request was for the Demon Lord to run a “Children’s Cafeteria” together. The Demon Lord, who had never cooked before and was known for his short temper, faced a dilemma. Could he really run a children’s cafeteria?