In the early stages of the Edo period, Kayo lives with her father in a food & tea house. One day, she was asked by the Princess of Sunpu Castellan for an odd favor. Because they are splitting images of each other, she was asked to take her place in a marriage promenade… Bewildered, but with her mindset, Kayo departs on a journey from the Tokaido region with six samurai for bodyguards on a marriage promenade to Edo, Hakone, Mishima, up till the destination in Sunpu. On the way towards Edo, she becomes caught up in youkai with destructive abilities, as well as the ‘Sword Retrieving Imperial Match’ that concerns the legendary five great swords, which is really a cover for a sickening ritual being performed… Through the crisscrossing and intertwining of paths, finally, the road splits into two: One, living with the sword in the path of war. Two, living with you in the path of peace. The destiny they find their way through to is…?