He, brother is attacked by brother, no blood relationship
He was very happy to have a younger brother join him in his life. He thought this younger brother would bring him warmth. At first, it really warmed him up from the cold. But then the temperature gradually increased to the point where he couldn't bear it. It was no longer warm, but burning.
Intention: Two miserable people who have ups and downs in fate warm each other because they meet each other.