Matsuri is a criminal organization led by Jūgo Yama's father.
The group is headed by Mr. Yama who leads them on many thieving quests in a bid to help those that are less fortunate.
His son was to be his successor and was trained in various arts but ultimately failed to understand the organization's purpose and therefore abandoned it.
As a result, he was disowned by his father for his views and sent to an island, where he is to live a new life.
- Jūgo hints the authorities would go after him should they learn this, due to his status as the organization's heir.