Old Swordmaster

The Old Swordmaster was an ancient master of the arts of war and

sword fighting, after his encounters with the demon girl he passed away, finally found a worthy opponent.

His sword "The Sage's Path" is now in possession of Demon Girl. Trivia:
 * The old swordmaster found the Tea appreciation club in his university
 * he was a huge fan of Akira Kurosawa's movies
 * he was secretly a fan of Rurouni Kenshi