The Demonic Contract

Story:

Yurisina, daughter of the Demon King, after coming of age, wanted to be recognized as a great demon when she entered into a contract with a human with a pledge as a soul. At the same time, the princess of the kingdom of Pedin, Marianne, summons her. She asks Yurisina to live in her place in order to take revenge on Queen Ophelius, who poisoned her.