Recently discharged from the military after losing an arm during a training exercise, Erwin Smith returns to the BDSM club he once frequented, hoping to find someone willing to give him control. There, he is introduced to Levi, another former soldier, new to the scene and burdened with a past he's unwilling to speak of.

On the high seas pirates draw their power not from devil fruit but with deals with demons, and pay the price in turn. Blood, salt, and water, everyone's soul is on the line, but only if you're fool enough to make a deal.

There are only a few more floors to go, and then they’ll all be out. Agen can make it. He has to.