Dr. Kenzo Tenma is a gifted Japanese neurosurgeon in Germany who saves the life of a boy, Johan Liebert, over a politician, unknowingly rescuing a future serial killer. Haunted by Johan’s crimes, Tenma sets out to stop him, grappling with themes of morality and the consequences of his choices.

Johan Liebert is a charismatic and brilliant character with a mysterious past. Known for his calm demeanor and sharp intellect, he captivates and influences those around him, leaving people drawn to his presence and curious about his true motives.