Reborn into the Most Hated System, Upgrading Depends on Perception

He died after being poisoned by the system, but was reborn into the system he hated the most! Traveling through six time and space, bound to six hosts respectively - the leader of the prehistoric tribe, the scholar of the Warring States Period, the knight of the rivers and lakes... It is obviously a system, but from the host, he can understand people bit by bit. Upgrading does not depend on the host's achievement, but on one's own perception from every flash and every touch. Hate the system, become the system, transcend the system. Unexpectedly, behind this is actually related to a story from a high-dimensional civilization... [Reverse system article, anti-routine unit drama, rebirth article]