As an independent organization, the Demon Slayer Corps has a clear organizational structure to help them work as effectively and efficiently as possible. At the top of the organization is the leader of the Demon Slayer Corps, a man by the name of Kagaya Ubuyashiki.
Right below Ubuyashiki are the Hashira. They are a group of elite fighters that have become the pillars of the organization. A level below the Hashira are the Tsuguko. So what is a Tsuguko? Here's just about everything you need to know about them.
Demon Slayer: Every Nichirin Sword Owned By The Hashira, Ranked
Every Hashira has their own designated area to protect. In order to do their job effectively, they have the privilege to point out a successor. Those successors are called Tsuguko. A Tsuguko will receive exclusive training from a Hashira. That's why a Tsuguko usually has the same breathing style as their Hashira.
A Tsuguko has two main responsibilities. The first one is to become a fighting partner to their Hashira. After all, in order to train properly, both the Hashira and their Tsugoku have to travel, train, and fight together. So having a highly-skilled partner will tremendously ease the burden of a Hashira when they have to fight numerous demons at once.
The second responsibility of a Tsuguko is to become the new Hashira when the current one falls on the battlefield or simply can no longer be a Hashira for various reasons. Hashira are the pinnacle of power to the Demon Slayer Corps, so it's hard to find their replacement when any one of them is gone. The Tsugoku system was effectively designed to avoid any vacancy in the seat of a given Hashira.
The main difference between a Tsuguko and Hashira is their strength and responsibility. Although a Tsuguko can
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