The Knight, Obedient Only to Me!

Having fallen out of favor with the Crown Prince, the magician Rowi is banished to a remote southern island. Just as he begins to enjoy his freedom, loneliness and depression creep in. Unable to bear it any longer, Rowi ends up buying a slave... Turns out my slave is a former paladin? "More than that, I'm curious about something else." "Yes?" "Have you actually killed a demon?" Rowi's eyes sparkled. *** "...So. You were the commander of the Elysion Order's Knights, and the Holy Sword was originally yours, but you didn't have any money, so the Holy Sword was sold, and you were sold too?" "Th-That's right." Ban lowered his head at the overly pathetic summary. "But you actually hated being...