Demon City’s ending was all about Sakata getting his revenge on the Kimen-gumi for killing his wife, Aoi, and supposedly murdering his daughter, Ryo. Back in the day, Sakata used to work as a hitman for Fujita. As his last assignment before seeking retirement and living the rest of his days as a family man, he killed off the last Yakuza group in the provincial city of Shinjo. When he went back home with the intention of starting a new chapter of his life, he found his wife and daughter being held hostage by a group of masked men. The Kimen-gumi were apparently cleaning up the city, and they saw Sakata as a “demon” who could ruin it all for them. So, they needed to finish him and his family off to avoid this hypothetical outcome. For some reason, on that fateful night, only Sakata’s wife died. Ryo...