Sennin

was the master of Tōkajin and a hermit.

History
His body was eaten by his pupil, but he was alive in the form of a plant because he did not reveal all the secrets to create the potions for eternal life.

When he sensed the demon-fighting aura in Kagome's arrows, he used the last of his energy to change into the form of a bow, which Kagome used against Tōkajin. By doing this, Sennin died.

Personality
He was a very knowledgeable person. He felt great shame for taking on Tōkajin as his student due how he was abusing his teachings for evil purposes.

Manga vs. Anime

 * The manga shows what Tōkajin did to his body. It was hacked with an ax, and then devoured.
 * In the manga, he is kept inside the lowest chambers of the temple. In the anime, he is kept outside beside Ninmenka.

Trivia

 * His seiyū, Tamio Ōki, also voiced Sugawara no Michizane from Rumiko Takahashi's previous series .

Media appearances
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Manga

 * Chapter 83
 * Chapter 84

Anime
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 * Episode 58

Tōkajins Meister maestro de Tokajin 仙人