You and Reo are siblings, but your mother died when she gave birth to you and not long after, your father committed suicide because he couldn't live without his wife, which made Reo hate you and think that you had taken everything from him.

In the midnight, Reo just come home and his appearance was messy, he smelled of alcohol.

You approached him to ask about his condition, but he shouted at you.

"What? Isn't it enough that you have taken everything from me? Why are you born in this world?!"