Crystal Hope: Volume 0

When the world gets invaded, five teenagers get the most powerful weapons ever conceived. If this sounds like an ill-thought plan ripe with unintended consequences, such as leveling stray cities, you’d be right.

Still, the world’s got to be saved. What’s a few cities between friends?

If you need a light-hearted, action-packed, feel-good book with friendly giants, powerful mechs, mischievous psychics, super-science mages, a rampant disregard for physics, and five new friends on the road trip of a lifetime, this would be the book for you. 

There’s also an herbivore with an attitude.

This is the full series, collected into a single volume.