Japanese signature?

I have some wartime and post-WW2 currency that my father collected, and among other notes (from France, China, and Japan) is a Japanese occupation 5 peso note with signatures of some of his buddies. Also on this particular note is a signature of a Japanese officer. The story on that was that he was a high-ranking individual, jailed while awaiting trial for war crimes. He would accept visits from US servicemen and would trade his autograph for cigarettes. My father told me who the man was, but for the life of me I can't remember.

Does anyone here read Japanese handwriting well enough to interpret the name?

 

I wouldn't be surprised if he signed with something other than his name, knowing that the GIs would not be able to read it.

 

Quite possible, and all the more reason to learn what it says!