Direct Hell is an insurance company operating within the Tower of Barbs.
Their key and primary service is allowing a dead Fighter to return from a complete and total death at the cost of only one Death Metal. (The first death is free.) Resurrecting in this manner grants temporary invisibility and ends the aggro of enemies, which can be used to run for your life or get the drop on whatever killed you.
They also allow you to permanently expand your storage space at a rate of 10 spaces / 2 DM, up to a maximum of 500 slots.
Through them, premium Elevator Passes can be purchased, which allows one to ride the golden elevator at no charge.
Direct Hell is a subsidary of the Yotsoyama Group, and has no power over the Jackals and their work.