What It's Like to Be an Emanator of Nihility?

Cale Henituse, an 18 year old red-haired teenager, suddenly fell into darkness after the beating that happened to him. He wandered through the darkness as far as he could for a very, very long time. He didn't feel hungry, thirsty, or sleepy. All he did was walk and keep walking.

He didn't know how long he had been looking for a way out. Because of the darkness, he didn't know how fast or slow time was. However, he felt like he had been walking for a very, very long time until it felt like his efforts were meaningless.

"I didn't know if you made it here. I think... I have a new friend who is the same as me." a woman with long white hair said.

"Welcome to the shadow of IX the Nihility, the new self-annihilator." the woman said again while holding out her hand.

It seemed like without Cale realizing it, he "tainted" himself with something he shouldn't have. What will happen to him?