One is a soldier bereft of purpose offered a second chance. Other is the Dragon God of Infinity wishing to return home. In a familiar yet different world with a new purpose, it's Tactimon's duty to ensure his new master's wish comes true. But when the world at large stands against you, and the line between ally and enemy is blurry, there can be no room for failure. To succeed, Tactimon needs his plan to be... perfect.

Digimon Xros Wars manga & High School DxD crossover