Arcadia's Knight Academy is the premier school for young men hoping to become a Sorceress’s Knight. Only nobles, people with power and prestige, are allowed within these hallowed grounds—which explains why Caspian Ignis del Sol is hated by everyone. He's not a noble, or of even slightly noble lineage. As payment for being enrolled in the academy, Caspian is sometimes given tasks to perform that take him outside of the academy walls. This time, his job is to deliver a letter to a Sorceress living in Ashtown, but when the train that he’s riding on is attacked by a mysterious band of thugs in cloaks, he’ll find that there is a whole lot more to this quest than he first imagined.

Caspian has made contact with the sorceress who resides in Ashtown, but Erica Demonica de Angelo is nothing like he expected. Arrogant. Narcissistic. Rude. She is everything that he despises, and now he's being forced to protect her. With disaster waiting around every corner, a clumsy but cute maid, a masochistic knight, the threat from an assassin looming over his head, and, of course, Erica herself, Caspian will need to hone all of his skill, strength, and wit if he wants to survive this precarious situation alive and sane.

The Sorceress’s Knight Tournament, a competition that’s hosted once every five years, has come to Arcadia’s Knight Academy. This tournament will decide who becomes the knight for the newest sorceress—who just so happens to be Caspian’s childhood friend.

Having nearly let Elincia die after they were attacked by a squadron of magical machines, Caspian is determined to become even stronger than he is now. But there are a lot of things standing in his way. The tournament is still ongoing, and with several people plotting behind the scenes, it will take everything he has and more to protect his friend and emerge the victor from the Sorceress’ Knight’s Tournament!

Caspian Ignis del Sol, a knight in training, finds himself in over his head when he becomes the temporary protector of a sorceress who's been given the nickname "Succubus."

It’s been several months since Caspian became Elincia’s knight. Their work hasn’t been too difficult thus far, but that is about to change when Sylvia tasks them with settling a dispute between two MagiTech companies: Thaumaturgical Industries and Harmonix. What should have been a simple investigation regarding the buying, selling, and creation of magical matrices becomes so much more when Cassadinia is attacked by Murakumos—the powerful MagiTech automatons that devastated the Colosseum during the Sorceress’s Knight’s Tournament. Discovering who is behind these attacks will take all the wit and skill these two possess. But they may not like what happens when they discover who the culprit is.

Caspian and Elincia have completed their mission in Dorumhold. The slave-trading operation has been wiped out and the Sorceress charged with ruling put back in place. Now, all that’s left is for them to return to Casadinia and report on their success. Or so they believe. But the danger isn’t over yet. In fact, it is just beginning. And it all starts when they return to Casadinia and find out that Sylvia is being charged with treason.