SOUL - Super Violence Fight

Ryo is a street fighter that is usually able to settle his disputes with his fists. However, did Ryo bite off more than he can chew when he inadvertently enters an underground tournament!? There's a oneshot at the end of volume 4 that was the basis for the series [Koukou Tekken-den Tough](https://www.mangaupdates.com/series.html?id=2156).