It's Schoolcap Masa Vs Kato Umezo! The Battle Of The Banchō (Delinquents). It's Proto Momotaro Tsurugi Vs Genji Togashi.
Source: Shiritsu Kiwamemichi Kōkō aka Ultimate Path Private High School created by Akira Miyashita. #ShiritsuKiwamemichiKoKo #UltimatePathPrivateHighSchool #私立極道高校 #AkiraMiyashita #宮下あきら #70sManga