Tokyo Revengers Season 1, Episode 17 : No way

Takemichi finds out about Keisuke and Kazutora's past and realizes how hard it's going to be to bring Keisuke back to Toman. The next day, Takemichi was trying to figure out what to do about his promise to Manjiro when Keisuke's second in command, Chifuyu Matsuno appears before him. Chifuyu seems to believe that Keisuke joined Valhalla not to crush Toman, but to infiltrate Valhalla and expose Tetta Kisaki.