Fantasy: I use the system to fetter the gods and demons

Luo Yuan inexplicably traveled to a fantasy world, where dangers and dangers abound!
Just when he was at a loss, the bond system was activated. As long as he formed a bond with someone, he could practice acceleration, double his comprehension, superimpose attribute bonuses, and even copy the opponent's ability!
Are you the only one in this world who possesses an immortal divine body?
Sorry, it's two now.
Are you the only one who knows the invincible skills?
Sorry, I just learned that too.
Avoid getting entangled with me?
I'm sorry, it's unavoidable, if you don't mess with me, I'll mess with you.
Many years later, the gods and demons looked at Luo Yuan, who became more and more courageous in the battle, and fell into deep thought. How come the more reinforcements he called, the stronger he became?

Main characters: Luo Yuan, Yu Siyue,

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