The Tsukasa Empire or the Empire of Might was a civilization made up of Pre-Petrification Humans freed by Tsukasa Shishio.


Following his supposed murder of Senku Ishigami, Tsukasa used his knowledge of the revival formula to create a new Kingdom. The Kingdom flourished with Tsukasa using his charisma in leading them.

Realizing Senku might be alive, Tsukasa sent Gen Asagiri as a spy to infiltrate Ishigami Village, the latter eventually defecting to the Kingdom of Science.

The first battle soon to place after Tsukasa sent his top Lieutenant Hyoga to wipeout the village. In the aftermath, they suffered a loss of warriors but discovered that Senku was alive and passed on his knowledge of weapons.

Tsukasa decided to wait for winter to pass, that way they could eradicate the Kingdom of Science with the sheer number of warriors they intended to revive.

In Chapter 78, the empire lost to the Kingdom of Science upon Senku's invention of dynamite as a method of forcing a stalemate. In Chapter 82, the empire's dissolution followed after Tsukasa's defeat and Hyoga's capture, and the faction merged with the Kingdom of Science.

Since the merge, the actual location has been turned into a larger research facility. At the top of the structure is a meeting room for the Five Wise Generals. Near it is a room where Senku and Chrome work on fine-tuning crucial chemicals and components. Another room is Yuzuriha's workshop, where she rebuilds the smashed statues and makes clothes. In addition, spare rooms are used to store materials.

Former Members of Tsukasa Empire

The renowned officers are Ukyo Saionji, former JSDF Navy Submarine Operator that has sensitive hearing, Hyoga, who later backstabbed Tsukasa, Homura Momiji, Hyoga's most trusted retainer, and Minami Hokutozai, who has abundant of information about famous people.

Yo Portrait


  1. Reboot: Chapter 8; Page 3
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