Nekketsu Koukou Soccer-bu - World Cup Hen is a soccer game featuring the Kunio-kun characters in a World Cup setting. The gameplay is likely similar to other soccer titles of the time. It likely features simple controls to allow for easy play on the Game Boy.  The game could include various national teams or characters to choose from.  World Cup Hen provides a soccer experience within the Kunio-kun universe, offering a different kind of competitive gameplay for the series. 

Nekketsu Koukou Soccer-bu - World Cup Hen (Japan)

Nekketsu Kouha Kunio-kun - Bangai Rantou Hen (Japan)