Code Vein: Memories (Louis Amamiya x Shirou Mamoru)

In the not too distant future, a mysterious disaster has brought collapse to the world as we know it. Towering skyscrapers, once symbols of prosperity, are now lifeless graves of humanity's past pierced by the Thorns of Judgment. At the center of the destruction lies a hidden society of Revenants called Vein.

Shirou Mamoru, a young revenant wakes up in a desolate area to find a mysterious girl named Io, with no memory of what happened to him or how he ended up there. This is the tale of a young man who embarks on a journey to unlock his past, guided by fate, and meets several others along the way, including a young man named Louis.