She is a supernatural girl who was awakened by him from a dry well.
She only has an empty soul, and only he can see her and feel her.
They were as close as brother and sister, but she didn't want to just be his sister.
He originally thought that they would live quietly in a small village for the rest of their lives, but their fate was completely overturned on his journey to find his mother.
It turns out that he is not the only one who can see her.
When another boy broke into her life, when another girl stood beside him.
She had to settle in a strange manor as his sister, pretend to be well-behaved and adapt to survival.
However, how will the love and hate of the four people be fulfilled?