Downtown Special: Kunio-kun no Jidaigeki Da yo Zenin Shuugou! English translation
ダウンタウンスペシャル くにおくんの時代劇だよ全員集合！
An early, partial English patch for the Game Boy Kunio-kun period-drama brawler: the menus and some lines are in English.
What's translated
This is a small, early translation credited to Lando: the menus and a scattering of dialogue lines are in English, while most of the game's text stays in Japanese. It began life as a modified copy of the game that circulated online and was later turned into a patch.
Status
Version 1.0 dates from January 2000. Treat it as a menu patch that helps you find your way around the game rather than a full translation.
Playing it
The patch is applied to your own copy of the Japanese Game Boy game, following the instructions in its readme. The patch's database page linked here has the details.