An Eye for an Eye and a Hole for a Hole

Original: 平成仁侠伝 兄弟、あの空で会おうぜ！

Kenji, the young head of Kato yakuza organisation, just got out of the jail. He comes home and founds out the opposing Sawaki yakuza is invading Kato's territory. Sawaki recruited Ikeyama and asked him to kill Kenji, but Ikeyama was Kenji's lover who exchanged the cup of brothers in a jail.