Chūshin

Chushin is a ninja who was helping Akaboshi to collect the Tsuchigumo clan's forbidden jutsu. He is a talkative man with a thin, gaunt face, a receded hairline, and a distinctive cleft in his chin.

Six-Tailed Beast arc
Akaboshi and his group make an on Mount Katsunagi to seach for the Tsuchigumo clan's forbidden jutsu. They were able to destroy the barrier within the mountain. When they climbed Mount Katsunagi, Chushin was almost pushed out of the cliff, but he managed to continue climbing. They couldn't find the jutsu anywhere and they ran into Tonbei who Akaboshi and his group defeated quickly. They discover that Hotaru Tsuchigumo has the jutsu and they begin searching for her.