S1·E47 Happy Birthday Part 2

Angry at the world and surrounded by loneliness, Bossun finds himself at the place where his father was slain in a car accident. A young man appears and explains to Bossun why his father died. He gives Bossun, a letter and present from his father that was supposed to be given to Haru. When Bossun sees a young man bullied by delinquents, will Bossun follow his father's philosophy or will he just live for himself?