Always Meet the Enemy with Your Fists

A young man who knows nothing about his past arrives in a completely unknown world. He has no idea who he is, yet battle fills him with a strange excitement. It seems his body’s instincts are telling him everything he doesn’t know. But the most deadly danger is right beside him.

A world-transmigration story. The first world is Shakugan no Shana; the worlds that follow are yet to be decided.