Hammer Hama, Banko's old buddy from Osaka enters the scene! Banko reunites with him in Tokyo as he transfers into Sawa High, entering its boxing club intending to win the Inter-School Championship. But after Hama becomes involved in a certain incident, the school is forced to revoke the boxing club's competition rights, crushing their hopes of winning tournament gold. Hama learns that the perps were a part of Justice. Despite discovering the massive scale of his enemies from Banko, Hama remains determined to pay them back. Witnessing his resolve, Banko finds himself once again impressed by his old friend, which leads to him steeling his own in response.