Lost in his brain - Queen & her army

The system was preparing to kill its host with a mental attack. Normally the system would never do this, or won't be able to do this, but by merging with Shiva's soul before his reincarnation, which made it a part of world Arcadia and unable to leave, also made it possible for it to kill him. 

There were some rules made to stop the system from ever harming its host, but it didn't care about it now. It didn't care about any consequences that would follow, breaking something, it was based, and made upon would surely result in some devastating results, but as they say anger overwrites reason. And the system felt the biggest betrayal it could feel, from the one being it trusted most and knew for the longest time.