Battles Without Honour, right? His character song is based on that.
I actually read the synopsis and am semi convinced that Akainu and Dragon are meant to rep the MC and his friend who he's ordered to kill.
Also Kizaru's character in that series has a twist which is why I expect some things from him.
Agree that either rebellious Akainu or Terminator Akainu works. As long as he gets treated with respect.
But BWH is not the only one. This guy on piratefolk brought up another movie too:
https://www.reddit.com/r/Piratefolk/comments/1o83y1m
This is Aramaki's film Ronin Gai. Akainu doesn't quite match but some inspiration is there from the epithet at least.
Have you ever seen the Truck Yaro series btw? Kizaru's character is actually based on a guy from the second film, even down to the name.