Ninmenka

is a demon fruit tree which devoured souls of people and turned them into peaches. Tōkajin used these to try and achieve immortality. When Ninmenka devoured Tōkajin, it transformed itself into a large thorn root monster. The result was Touboku Ninmenka.

History
When Tōkajin waits for the time for him to be sage, he sees a Shikon jewel shard and later complains that it cannot be eaten, so he throws the shard behind him. However, he accidentally threw the shard into Ninmenka, the demon fruit tree. Ninmenka speaks behind Tōkajin, thanking him for the shard and asks him if he wanted to be a sage. Tōkajin answers yes, then Ninmenka orders Tōkajin to eat the human head peaches, in order to become a powerful sage. It was because of Tōkajin's shard that revived him and after a while a samurai had it shows that Tōkajin took Ninmenka's shard because Tōkajin was tired of Ninmenka's rude orders.

Manga vs. Anime
The Ninmenka has the ability to speak in the anime, but does not in the manga.

Fruta Humana