Then "Ten Strange Dreams" Spell card has the power to alter and denature the flows of Gensoukyou's ether veins, and drain most of the youkai and fairy's power away in doing so, making it a very dangerous offensive magic.

So dangerous that we had to secretly seal it away. But somehow, the Insect people have gotten wind of it...

Even the current Toyoukai don't know about such dangerous magic like this.

What we're doing here has nothing to do with the city's government. But the cooperation of humans with abilities like you is absolutely necessary.

All right, we've reached the bottom.

It will take a full day to walk from here to where we need to go.