In Episode 25, Jin remembers a flashback of a conversation with Mariya about turning the Dojo into an assassins academy. Jin said if it becomes that, then Mujushin Kenjutsu would no longer be a martial art. Change was the only way to survive in this day and age, Mariya lamented. In Kariya Kagetoki's view, if Jin would not see change, he would have to be erased from the picture. Jin would have to be killed in his sleep. However, Jin killed his attacker in the dead of the night, discovering to his horror that it was Mariya. Proudly before passing away, Mariya remarked, "You've improved tremendously, Jin."