He and she are brother and sister. Although he knows that he and her are not related by blood, he also knows that he loves her, but she is not suitable to stay with him after all. It was destined at a very young age~~, isn't it? His father asked him to do it before he died~~ He must do it, although he selfishly wants to take her with him~~~
She loves the other him, but why is her brother so weird? Can't they love each other?