Yes — an English fan translation patch exists for Kenka Banchō 5 on PSP, and people report it works, but you must apply it correctly. Brief guidance:

Misleading Downloads: Many ROM-hosting sites claim to offer "English" versions or patches for Kenka Banchou 5. These are typically the original Japanese ISOs mislabeled for traffic. Users should be cautious of sites claiming a "100% English patch" as these are frequently scams or clickbait. Why the English Patch is "Work in Progress"

When that day comes, the brawl will finally be over. And it will have been worth every scraped knuckle.

Cheats Not Working: Most CWCheat codes for the Japanese version (ULJS-00353) will still work with the English patch, as the memory addresses for health and money rarely shift during translation. 👊 Why Play Kenka Bancho 5?

Since you'll be playing the Japanese version, you will need the following tools and resources: Game Version Kenka Banchou 5: Otoko no Rule (ULJS-00361). Core Guide Kenka Banchou 5 Strategy Guide

How to Apply the English Patch

series, this is a must-play. Even without a 100% complete story patch, the gameplay loop—winning "word battles," recruiting "peons," and rising to become the top Bancho—is intuitive enough that you won't feel lost. Best-in-class character customization for the series. Large, interconnected city maps.