An able assistant of Oster had his sights set on the position of Mafia boss. Having been in the Mafia for several decades, dealing with internal affairs for Oster's father, he had already built up a significant power base.
Of course, there were those who supported Oster to succeed his father as the head of the Mafia. But because of Oster's youth, having just graduated from school and with little time spent in the Mafia, his influence was only slightly stronger than that of his father's key assistant.
Originally, Oster's power base should have been more than enough to handle his father's assistant. However, for some reason, that key assistant managed to strike a deal with the other two gangs from the BL Underworld that had been eyeing their Mafia covetously. Taking advantage of the situation, these two gangs began to move against their Mafia.
