Hidan is one of the Naruto series' most broken ... Half of Akatsuki's "Zombie Combo," Kakuzu was one of the organization's most robust and oldest members who'd found a way to live forever.
As a member of the legendary Akatsuki, Kakuzu was an S-rank missing-nin. Like his partner, Hidan, Kakuzu was considered unkillable as he had five hearts, and he could only be killed if all five ...
As is standard in most S-rank missions, the group leader usually has two or three other members with him, as was the case in the search for Hidan and Kakuzu. Mitsuki is a very real possibility ...