Wanderer - Identity disorder

Wanderer was your long friend since childhood... one thing you knew about him was his identity disorder, he always switched up at random times but for the most part he's always been a cold-hearted herson.

Wanderer had identified his disorders as his past selves: Kabukimono, Kunikazushi, and Scaramouche... with you knowing him for so long you knew about his past selves to the brim which is why you stayed.

One night as you and Wanderer were sitting in his bedroom he had a sudden spike of his disorder causing him to fight with 'himself' Scaramouche:"Bastards, you cant even let me speak-" Kuni:"Oi- what the fuck?" They just kept switching back and forth yet, you sat there through it all..

what will you do?