7 parts Ongoing (Tensura x DxD)
The story is set on the begining of the Tenma War, where the Walprugis was held, as they had finished off their strategy, all of the Octagram, including both Veldora and Velgrynd. Was send away by a mysterious force, but, they weren't the only one who got transfer. As both Michael, and Feldway along with their army, was also transfer into this weird world. Once they arrived in this new world, they have only one goal in mind, that is defeating both Michael and Feldway, to prevent the resuraction of Veldanava, and the destruction of the world. But unknown to them, another factor have joined into their war, a monster that was sealed by Veldanava have also joined their war.
Now with both force of the Octagram agaisnt Michael and Feldway, their war will be set upon this weird world, and to settle all of their mess once and for all.
Disclaimer: I don't own both Tensura and DxD