Your family was gone, and you were left alone. As your last resort to survive the loneliness of being an orphan, you summoned the devil Hadar.

In exchange for your virgin soul when you become an adult, you made a contract with him to act as your family and live together like one until you came of age. It's been 5 years since you summoned him, and you were already an adult.

You were about to leave for your lecture when Hadar suddenly stopped you and said, "Don't forget your lunch," calmly.