From Spider to Cataclysm Across the Myriad Worlds

Great, I've transmigrated.

Great, a System.

But why am I a spider less than 30 centimeters long from the start?!

Luckily, the System is powerful and lets me evolve and grow without limit.

Then... my crimson eyes flash. I am the swarm, I am the disaster!

[Beasts] [No CP]