Sacudžin no joru (E01)

On his birthday, the young Avilio's happy life comes to a sudden end as mafia feud results in the death of both of his parents. Seven years later, he receives a letter from an unknown person, and grins in quiet glee. The letter spurs him to return to Lawless, where he reunites with his childhood friend Corteo, and encourages him to sell moonshine liquor to the Vanetti Family. (Crunchyroll)