 If you liked
Banana Fish
|
 ...then you might like
Vinland Saga
|
Not entirely similar but they're both action packed and show a strong dynamic relationship between male characters.
Both anime are in my top favourite anime as the plots are amazing and show a clear structure.
The main characters are strong and independent and work hard at surviving in completely different worlds.
Banana Fish is set in New York, America around the 90's, whereas Vinland Saga is set during the Viking Era in England.
Check both of them out if you haven't already done so