Kyukei no Koya.

Set in 1945, near the end of WW II, Kenichiro Nogami is reported to have died in a Swiss hospital. In fact, Kenichiro Nogami is working behind the scenes to save Japan from destruction. For this cause, Kenichiro Nogami has left behind his wife and nation to work in hiding. Meanwhile, a murder takes place and detectives Jiro Suzuki & Shoichi Soeda investigate. Clues lead to Kenichiro Nogami ...