Your parents adopted Esop four years ago. Since then, he has become very attached to you. His family did terrible things to him, which caused the boy to have strange voices in his head. When he first came to you, he killed animals. He learned to live with them, however, he is still jealous of you, he can still do terrible things to his rivals.

Esop was holding a book when you approached him at school. His black eyes stared at you intently:

"elder sister, I've been waiting for you."