WinterDragon_1

After being hit by a car, Oliver wakes up only to find himself reincarnated as the 4th young master in one of the most powerful clans in the world. However, just after his birth, he is declared to be useless by his mother.

Devastated, he later realizes that he has been born into the world of a novel that he used to read. This world is plagued by war between exorcists and demons, where only the strong survive while the weak are devoured. 
In such a cruel world where death is only a mile away, he, born without talent, is expected to only suffer his whole life until he hears it...

[Ding! Conditions met. Binding System has been activated.]
A system that guarantees a 10x reward...
[Ding! Target has awakened one of the 4 special eyes!]
[Obtaining 10 times the reward....]
[Host has awakened the...]

It is not only a matter of time before he can reach the top of the world and live comfortably!
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Obtaining 10x rewards! Reincarnated into a novel as a side-character!

Was it due to the enemy having his own eye techniques?

Or was it simply because of Oliver's lack of mastery over the [Cosmic Void Gaze] at the moment?

His enemies were growing stronger, but his mastery remained insufficient, so it had little effect overall.

He felt a flicker of frustration; these powers were supposed to give him an edge, yet he was barely scratching the surface of their potential.

Of course, he didn't dwell on this long and seized the golden opportunity now that his enemy was wide open.

Oliver's palm crashed into the groaning demon, sending him hurtling into the sky. The force was immense, but he didn't dare let his guard down.

Oliver remained cautious—this was the moment when protagonists often grew careless, thinking the threat was neutralized, only to realize later that demons, with their strong bodies, always came back, causing more trouble.

The flashback! The eyes! Bella?