What are Star Plasma Vessels in Jujutsu Kaisen?

Summary

• Tengen's barrier concentrates cursed energy inside Japan.
• Tengen's immortality makes the barrier work.
• Star Plasma Vessel rewrites the Tengen's biological information to prevent overwhelming.

IN Jujutsu KaisenThere are several protective measures to protect ordinary people from cursed spirits. However, Master Tengen's barrier is one of the most valuable. As Jujutsu Kaisen's Hidden Inventory/Premature Death arc shows that a threat to this barrier is dangerous.

Master Tengen's immortality helps maintain their barrier, sealing most of the world's cursed energy inside Japan. However, when unchecked, Tengen's powers can become too strong to control. So the wizard restores his powers by assimilating into a new human form known as the Star Plasma Vessel.

Master Tengen's barrier keeps cursed spirits in Japan

Their immortality keeps the barrier functioning

Tengen manages several barriers that protect the world from cursed spirits. Their main barrier includes Japan, sealing cursed energy within its borders. This barrier explains the large number of cursed spirits and jujutsu wizards within the nation. A smaller barrier camouflages Tokyo Jujutsu High, blending the institution's buildings to hide the “cursed warehouse”, a storage area for cursed items.

An elevator inside the Cursed Warehouse descends into the Tomb of the Star, a series of tunnels leading to a tall sacred tree. Tengen's last barrier protects itself from the inside of the tree. Only those invited by the wizard may enter.

As you would guess, Tengen's cursed technique is godlike. They are immortal, having existed for over a thousand years. But this immortality comes at a price. Over time, Tengen's cursed energy accumulates to the point where it overpowers the wizard's will and transforms them into a being of higher power.

Star Plasma Vessels Restore Master Tengen's powers

Ships prepare for this task from birth

Master Tengen must restore their power levels to prevent their cursed energy from taking over their will. That's where the Star Plasma Vessel comes in. A star plasma vessel is a human compatible with Master Tengen. When the star plasma vessel assimilates with the Tengen, the wizard's biological information is rewritten, restoring their power. See this process as a reincarnation.

Star plasma vessels prepare for assimilation from birth. For example, they are not allowed to go out much and have limited interpersonal relationships. These restrictions prevent the vessel from attaching to the human world, which can result in the vessel refusing to assimilate.

A caretaker looks for the star plasma vessel. These characters take on multiple roles, such as preparing the ship's meals, treating them when they are sick, and protecting them from attackers. Star Plasma Vessel Wardens are like babysitters combined with security guards.

Two factions work to prevent assimilation

These groups are focused on stellar plasma vessels

One would assume that the assimilation of the star plasma vessel benefits everyone. After all, who would want to unleash the powers of an unwieldy Tengen? Surprisingly, two factions do not want assimilation to happen: the religious groups Q and Star.

The Q Group is a faction of curse users who want to overthrow the establishment of jujutsu by preventing the assimilation of the star plasma vessel. Its theory is that if Tengen's power is not restored, the wizard will turn on humanity and Jujutsu High. This accident would allow curse users to act unrestrained by jujutsu enforcement.

The Star Religious Group is a faction that worships Master Tengen as a god. The Tengen practiced Buddhism during the Nara period and spread its principles throughout Japan. These teachings are responsible for the jujutsu principles that sorcerers practice today. However, a sect of Tengen's followers sought to deify the sorcerer and formed a religion dedicated to Tengen's omnipotence.

Followers of the Star Religious Group, known as the Children of the Star, want Tengen to remain untainted by a vessel so that the sorcerer can be transformed into a deity. They consciously accept the consequences of Tengen's ascension and see it as rapture.

Because the Q group consists of curse users. They can employ their members as attackers of the star plasma vessel. On the other hand, the Star Religious Group consists of non-cursed users, who protect the organization from attacks by jujutsu wizards (wizards are obligated to protect non-wizards regardless of their intentions). Since the children of the star are not strong enough to fight wizards, the group enlists outside help from the cursed user's underworld.