koan is summoned by an elf and cat girl to another world. As yet this world fill with corruption and new adventure that will witness the demon lord who is a chaotic hero from another world.

the undead, 52 creatures that represents every living animal in the animal kingdom, only 4 riders of four suits can stop them... but they are not 4 people, just two, and lets see if there luck can take them though a high school with girls that has superpowers and armor to match it.

zack has landed where he encounter 3 of his childhood friend but that's not all, fill with strong warriors of weapons , fighting techniques and more. Now our hero is ready to let loose