Seraph of the End: Guren Ichinose: Resurrection at Nineteen 2

From the popular Seraph of the End series comes the latest prequel of the light novels!

What meaning can life have after the end of the world?

Guren and his friends are forced to consider this question, even as they fight to rebuild their ruined world—the world that Guren himself destroyed. Dispatched by the newly constituted Japanese Imperial Demon Army on a mission to restore power to the area, they encounter a powerful vampire. But all is not as it seems...
Faced with shifting loyalties and manipulated from all sides, Guren must decide who to trust—Mahiru? Saito? Ferid Bathory? Can he even trust himself? The mysteries of the past slowly begin to unravel as Guren and his friends hurtle towards an uncertain future.