Oh, blastia's... well, it's used for everything. It's sort of like a power source, I guess. Each major town has a barrier blastia to keep monsters out, and there's other kinds of blastia to do other things. Purifying water, powering weapons and ships... there's a lot of stuff blastia are used for.

People wouldn't stand a chance against monsters without blastia, though everyone uses smaller blastia cores for that. And then there's this.

[He holds up his metal left arm. Parts of it are glowing green, including the fingerpads. It's pretty stupid-looking.]

This has got to be powered by a blastia, but it's definitely a stronger one than any I've used before. It also doesn't seem to be working? But the arm still moves. So I'm not really sure what's going on.

[did you enjoy your crash course in blastia 101 with the worst person to attempt to explain it??]