Overview: Legendary boxing promoter Kaiser arrives in Japan and walks into the gym where Retsu is training. Impressed, Kaiser makes him an offer.
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First Air Date: Sep 30, 2021Last Air date: Aug 24, 2023Season: 2 SeasonEpisode: 39 EpisodeRuntime: 24 minutesQuality: HDIMDb: 8.13 / 10 by 495 usersPopularity: 123.722Language: Japanese