Ten years after defeating the Demon Lord, the man known as the Demon Slayer seeks to find his companion who was lost to him around ten years ago. Upon their reunion, a new story begins when they find themselves on the run and find the only place they can gain shelter is a land they have yet to explore. From strange cities patrolled by ninjas to a mysterious being working behind the scenes to rule this land under their thumb, as well as a wackjob wizard who won't leave our team alone. Just what sort of adventures await the Demon Slayer and his Sidekick? Only time will tell.