
Sword of the Demon Hunter
Jinta, a bodyguard to a priestess in a remote mountain village, lives during Japan's Edo period. While Jinta is an outsider to the town, he is still tasked with seeking out a demon in the forest on a quest to vanquish it. But upon meeting the demon, it instead tells Jinta of a puzzling and mysterious future. The novels' story spans 170 years from the Edo period to the Heisei period, with the protagonists traveling through space and time while seeking a meaning for why they wield the blade.
It is 1840, year 1 of Japan's Tenpo era. There lies a small village known as Kadono that is home to the siblings Jinta and Suzune. Jinta is quickly dispatched to slay demons.

Jinta changes his name to Jinya and departs Kadono. Ten years pass and he is now a ronin living in Edo, well-known by the locals as "the demon slayer."