Code Vein: Lost In The Shadows

Set in the near future, the world has fallen to a mysterious calamity known as the Great Collapse. In order to fight the monsters that began emerging around the world, humanity created the Revenants: human corpses brought back to life by implanting a Biological Organ Regenerative (BOR) parasite within the heart, acting as vampiric fighters with unique abilities.

Because of this calamity, Louis lost a precious person when he was a human. But when he became a Revenant, he lost most of the memories of when he was still a human. Losing those memories helped Louis stop his feelings of guilt that pierced him even deeper.

But on a certain fateful day, Louis encounters with a peculiar boy, who for some strange reason seems familiar to him. This boy will be the one who triggers the tragic memories Louis has forgotten.