Sandbox of Interest

Brumane, a supernatural world with an expansive past that is inhabited with various different beings that clash constantly.

Isia, a normal world with advanced technology that is getting ever closer to releasing a space vessel that can explore the distant stars without restraint.

The two worlds collide in mysterious and unseen ways.

As if they are place in a sandbox...

One may never notice, but it seems that the two worlds are actually pitted against each other.

What may happen?