Monster 01

The series follows Dr. Kenzo Tenma (天馬 賢三, Tenma Kenzo?) as he pursues a young psychopath/sociopath named Johan, whose life Tenma once saved. The story rapidly progresses through a number of locations: it starts in Düsseldorf, Germany, passes through Berlin, Frankfurt, Munich, Wiesbaden, cities in the Czech Republic such as Prague, and other cities and villages.