Angel x Contract

A high school boy, his sister, and two magicians are involved in a story. The narrative centers on their interactions and the dynamics between them. One of the magicians forms a contract with the boy, which plays a key role in the plot. The story explores the consequences and developments that arise from this agreement. The sister's role is also significant, though the nature of her involvement is not specified. The magicians possess abilities tied to their magical practices, and their presence affects the lives of the siblings. The story does not elaborate on the setting or the exact terms of the contract. The focus remains on the relationships and the impact of the magical elements on the characters' lives.