This seems like a problem that shouldn't exist. House built in the 50's, and has two roof sections almost identical, but for the bump out they overlap(!?), and the bottom is closed in, which has resulted in the wood of the soffit becoming incredibly rotten.
Thankfully there is no interior water damage that I know about. Short of having more flashing installed when I inevitably have the roof replaced in the next 10 years or so, anything I can do in the short term to mitigate it?
Photos of the roof: