The Sky Is Our Fortress

A shy emo kid forms a magical contract with a knight from another world. All his life, Theo has dreamed about flying cities and magic diagrams. But when he's awake, his biggest problem is working up the courage to start his own emo band. At least until he stumbles into an arena straight out of his dreams where a knight is battling a dragon. The next thing Theo knows, he finds himself magically bound to the knight, Sir Zenith. Turns out Theo is a wizard, and Zenith is the familiar who serves him. This is the last thing Theo wants, but he doesn't have time to adjust. An army of demons is after him, and they might share a connection to his past. If he wants answers - and to survive - Theo will have to trust Zenith and find the strength to fight alongside him.