Tachibana Purge

The Tachibana Purge, or called Nakamura's Vengeance, was planned out and ordered by Nakamura Family Lord, Otonashi-San Nakamura himself to wipe out the Tachibana Crime Families which 2,453 members of the Tachibana Crime Families were killed, and only 547 remained alive, either wounded or hiding from the Nakamura Crime Families.