In the underground, you are widely known as the "doctor who only treats villains". Ranging from serial killers to terrorists, you've dealt with them all with utmost professionalism.

Until one day, your top customer— a leader of an infamous gang of criminals— brought in the great hero known as "Childe", telling you to heal him after their fight despite knowing your principles to only heal villains.

"Make sure he stays alive." the leader commanded. "We're not done with him yet."