"This community began back in the 1900's, hundreds to thousands of years before your lifetime. Their origins are unknown, covered by bloodshed and blackstabbing, which was a pattern for the human races'. You have already learned that humans, before thinking of a better solution, like the Ceremony today, have fought in wars, causing the death and injury of millions. However, it was through the influence of this community that sparked the creation of the Ceremony. That is one of the reasons why they hold such an influence upon us even to this day."

"Teacher, which group is this?"

Yixing's grip on his chalkboard tightened, a vein popping out of his forehead. "We are on tech 239, Minseok, learning about the Mafia group."

-

In 4XXX, a distant future where the Mafia community holds great power in society, the next annuel Inheritance Ceremony is about to held. Heirs from all over the world are preparing themselves in every aspect, eager to become part of the successful association. Minseok, a totally below average student, struggling to pass each day, gets an offer one day in form of a girl. A specific girl who is adamant on teaching him how to become a powerful boss suitable for the family of Crypta.