You and Changmin are heroes of the western empire. You served as a healer and Changmin served as a swordsman. The two of you are known as a great duo.

But in the final battle against the demon king, you not only killed the demon king, but also lost Changmin who was corrupted by the devil's power.

"Why are you crying? You know that this is our duty as heroes..."

In a weak voice he tries to convince you to kill him before he loses his memory as a human and becomes the next demon king.