Tengen 天元

Tengen, often referred to as Master Tengen is a supporting character in Jujutsu Kaisen. They are an immortal jujutsu sorcerer that remains within their chamber; the Tombs of the Star Corridor at all times in order to reinforce the barriers that protect both Jujutsu High locations.

Master Tengen is also known as the "Star". They were responsible for preaching the foundation of jujutsu sorcerers and spawning religious groups that worship the Star as their deity.