Yōreitaisei

was a demon hermit.

History
With Tessaiga's new form, Dragon-scaled Tessaiga, Tōtōsai sent Inuyasha to him to train so he could use it without it backfiring. Mō-Mō lead Inuyasha and his friends to the village the demon hermit resided. When Inuyasha reaches the village, he undergoes a test to help Inuyasha discover the existence of whirlpools of demonic energy that he can cut to defeat his enemies.

Trivia

 * His seiyū voiced serveral characters from Rumiko Takahashi's previous series. They include Happosai from Ranma ½, and Coach Mukoda from One Pound Gospel.

Yōreitaisei Yoreitaisei 妖灵大圣