Underground Babys Anime Details and Episodes Tenma, a yakuza, is in charge of running an underground arena where once you fall in, you never get out alive. He spends his days in this routine, until a… Series info Watch free DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresActionRomance TagsBoys' LoveYakuzaMartial Arts RecommendationsBakashite Damashite