Seven-One Five-Element Mage

Across a hundred lifetimes, never once has he seen the world beyond. Each life is confined to an area no more than a thousand meters across, and he never lives past the age of twenty-five. If he enters another world and is reincarnated once more, can he break these limits and live a complete life at last...

In another world, he'll use the experience of a hundred lifetimes to train mages like special forces. Anything he has read in books or seen in videos, he'll try first and ask questions later!

No guns or bullets, no cannons or missiles. We have magic!