Duel Monsters - Duel Terminal Part 2

From the introduction:

Barely more than a decade ago, the world almost died. The war of the ruling tribes has finally ended, but not because of their own wishes. Alien invaders from other worlds and ancient demons locked away both struck, forcing the current peoples to band together in hopes of survival. Though we carry on, much was lost, and even now new factions seek to fan the flames of war for their own reasons.