Bokusen'on
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Bokusen'on ("grandfather wizard nettle tree") is a tree-yōkai from the manga and anime series InuYasha. He is revealed to be 2,000-year-old nettle tree. It was he who revealed the truth about InuYasha's transformation to Sesshōmaru. He was close friend of Inu no Taishō, and obviously a very powerful one since his branches alone were strong enough to craft the powerful sheaths of Tessaiga and Tenseiga. He was seen in a flashback on the third movie when Myoga asks Totosai if he has given Tenseiga to Sesshomaru but Totosai says he wanted to live a long life and hung Tenseiga on Bokusen-On's branch.