His parents died young when he was young, and he has only one younger sister who he has depended on since childhood. He is withdrawn and introverted.
What is his life experience, and what happened in the past?
Who are his parents? He didn't know that he had no memory of before he was seven years old. The only thing he remembered was that he had a sister, and he decided to protect his sister! And, find your own past!
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.