Yuri Shibuya was living a pretty normal life. That changed the day he was dunked into a toilet after an attempt to save a classmate from a gang of bullies. Instead of just getting a good soaking, he's pulled...

Vowing never to separate from his childhood friend Hisame, Itsuki travels on the Tokaido with him in search of new adventures. Exterminating youkai along the way, they depend on each other to finish the job....