Hidden?

Rifir moved towards the door as black energy began covering it.

His blood-red iris shone, and the energy slowly started to pass through the door.

This wasn't a regular door that could be passed through so easily.

Each door led to a different location, utilizing a unique spatial spell and runes that enabled it.

Yet, Rifir's energy managed to penetrate that spell without getting entangled with the spatial energy.

Rifir's form disintegrated as he moved to the other side, leaving Asher alone in the room.

Asher approached the door and saw similar black energy forming a cloud-like figure in front of it.

When Asher touched the cloud, the black energy immediately wrapped around and enveloped him.

He didn't feel it, but he vanished from that room and reappeared inside another.

The skill Rifir had just used was closely related to the skill known as Shadow Travel.