Arak was now the Genre Representative of Murim Worlds—Martial.
It truly was turning a crisis into an opportunity. If Compass Carburettor hadn't appeared, Immortal wouldn't have up and died so quickly and Zaira wouldn't have plotted against Martial just to trap Arnark and Compass Carburettor.
Whether it was Arnark's Revival through Conjurer, Arnark stealing the power of the Main Character System from Compass Carburettor, Immortal's death, Mascot's actions, Magister using his Genre Representation and becoming temporarily weakened, Truck-Kun's involvement in this mess, Truck-Kun being forced to scheme and send Zaira to Mystique's doorstep, etc. Slayer had a hand in everything.
It was him triggering the right party at the opportune time that resulted in the sequence of events leading to the current outcome.