Tōkajin

Tokajin is a man who lives on top of a cliff in the Togenkyo region, where he watches over the Ninmenka (human-faced peach tree). He uses the Ninmenka to try and achieve immortality through the Fruit of Longevity.

Tokajin would 'save' soldiers who were lost and hungry from war, shrink them down to size and make them train to become sages in his minature village. When one of his apprentices would gain even minor spiritual stature, they would be put in Tokajin's gourd to dissolve and become nourishment for Ninmenka. In the manga, he uses a staff to shrink Inuyasha, instead of a gourd. As flowers spew from the staff, he told Inuyasha to "look closely", as they become bigger and as Inuyasha shrinks.

Tokajin meets his end as he starts to fall to his death during his battle with Inuyasha, and Ninmenka saves him, only to devour the "Sage" in order to gain precious nourishment.