Two boys born on the same day. One is a normal healthy boy, the other one is reincarnated.

The reincarnated soul belongs to a smart college student. Because the memories from his previous life he learns everything quickly.

Light Kingspirit is his new name.

He quickly arise and becomes the strongest demon hunter alive while the normal boy, Shade Netherworld encounter a spirit wolf that grants him a new power.

What will become of those two?