The family left only two brothers who survived and relied on each other. While Muichiro has a sensitive and kind nature like his late father. Muichiro thinks that when you help someone, at some point they will help you back just like his father said. Yuichiro is a cold and stubborn person because of the death of their parents. Contrary to his innocent younger brother named Muichiro, Yuichiro, on the other hand, thinks that the words of his father.