 His hair is also strong enough to swing him from tree to tree (leaving his hands free for combat) or even to wrap around an enemy and crush them like a Boa Constrictor.Beneath his robes, his body is covered in coarse fur that can be stiffened into needles to skewer any opponent that gets too close and also provides protection from certain techniques; this the technique he uses to kill Okoi, in example, stabbing her to death when she attacks him after killing Rousai.In the manga, Nenki's hair reflects his moods; writhing wildly whenever he becomes enraged or excited.