Lucien furrowed his brows and pondered.
In the 'Slaying the Demons', this incident had never happened before. There are a lot of mass killings, but such things appeared because of a game rule or because someone deliberately used a dangerous demonic artifact to control players into killing each other.
As far as the anime's progress is concerned, only one person was able to control players into killing each other.
Keith.
Lucien weighed the chances. Could it be him?
But they entered the Blood Tower at the same time. Even if Keith was diligent about playing survival games every day, he could not reach the tenth floor within one week.
Even Aiden, the main protagonist, took five years for him to conquer up to the upper floors of the demon realm, and he still has not cleared the floors yet.
Lucien immediately removed the theory of holding Keith responsible for this incident.