A long time ago, a group of ninjas (Sasuke, Saizou, Seikai, Tsuruhime, Jiraiya) imprison Nurarihiyon and his band of Youkai. Many years later, Modern-day Sasuke and Saizou accidentally release the Youkai from their imprisonment. Tsuruhime comes along and tells the Hapless duo of their lineage. The ancestors appear and give them their Doron Changers. Sasuke, Saizou, and Tsuruhime then go to find the last two descendants (Modern-day Seikai and Jiraiya).—Agito25