Sometime in the 17th century, Amano Jyaku began his search for the Chōjin in the human realm - it is not known whether Megumi Amano or Kuroko accompanied him. Also, during this time, he must have encountered Suikakujyu and started of his infamous rivalry with him.

Little is known up to 1923, where he foiled Suikakujyu's attempt to destroy the Chōjin using a water demon. Unfortunately, it triggered off the Great Kanto Earthquake and Tokyo suffered heavy losses.

Cut to Osaka, in the late eighties/early nineties, and Amano Jyaku's quest for the Chōjin has taken him to Myojin University. It is here that he, Megumi and Kuroko encounter Tatsuo Nagumo and Akemi Ito. From the outset, Amano believes Ozaki to be the Chōjin. However, it transpires that Ozaki merely had some of the Chōjin's power and Amano soon realises that Nagumo is his prime suspect.

From here on Amano becomes the unofficial protector of the Chōjin and becomes the defender of all that is right and moral - or so he thinks....