User blog comment:DanteRedgrave/Build-An-Ending/@comment-1359322-20131024070608

The Final Battle Issei + Great Red vs 666 (powered up version) with the fate of the world at stake as 666's powers starts to create a distortion in the Dimensional Gap threatening all the worlds. Issei + Great Red battle 666 in a super battle but with little time left and the powered up 666 being stronger, Issei + Great Red has no choice but to use a self destruct spell as the two rushed towards 666 grappling him as they enter the Dimensional Gap with a huge explosion happening soon. After the decisive battle Issei, Great Red and 666 is no where to be seen as DxD ends.