In the great chasm of Senter Valley, the space fluctuated as a figure materialized high in the air. A Spritual Creature was passing by but when it noticed the figure, it flapped it's winges harder than ever and flew away.
Shen Yu looked down at the empty, ravaged piece of land down in the valley. It stood out greatly and was visible even from high above.
After all, all around it was the dense blanket of greenery. It looked like a hole in that blanket.
The Senter Valley base.
The base formerly controlled by the Assassin Organisation, but even they didn't knew the reason for its establishment. It was made in ancient times for some reason and it had been there, enduring the constant attacks of powerful Spiritual Creatures all year round.