Keiichiro, a 17 year old virgin of the Tokugawa clan, is accused to murder. While trying to sniff out the true culprit, he's launched into a battle with a super powered robot aiming to put him in a hurt locker!

Keiichiro learns the truth behind his ability to pilot Susanoo. In order to rid himself of the responsibility, he decides to head to a pleasure house to find a girl that can free him.

An assassin is sent to kill Keiichiro before the full potential of Susanoo can be attained. Chiharu tries her hardest to get her hands on Kei-chan, but a certain someone is stopping every one of her attempts.

A mysterious figure rolls into town seeking vengeance from the seal bearer of the Tokugawa clan.

Even during festval time, Keiichiro's relentless pursuit to break the curse afflicting him knows no respite. Kiriko is instructed by grannie herself to help lift the burden from Keiichiro's back through a single kiss.

In another town, a new story is being forged, with political corruption at the epicenter and a new Onigami yet to awaken.