Sorcerous Stabber Orphen

He calls himself Orphen: a rogue sorcerer who turned his back on the Tower of Fangs, the powerful academy that trained him. In those hallowed halls, a terrible curse fell upon his best friend Azalie, twisting her into a monstrous beast... and the teachers decided to simply cover it up. Forsaking his studies and even his own name, Orphen now wanders the land searching for Azalie, and a cure for what she has become. It won't be easy -- a quest brimming with adventure, spells, and swords awaits!

(Source: Seven Seas Entertainment)

A sorcerer who once been the top student of the famous Tower of Fang, now spends his time chasing around his hopeless clients as a moneylender; at least until his client comes up with a plan to make money: marriage fraud. Unwillingly being dragged in to the plan, Orphen encounters a monster who has long been his goal since the day he left the Tower of Fang. Between those who seek to kill the monster and Orphen, giving everything to protect the monster, his lousy but peaceful days end. Trying to turn back his sister, Azalie back to her true form leads to many more mysteries and the key to the secret to the world.

It seems some killing machines have woken up, and want to destroy every sorcerer on the planet! But Orphen isn't allowed to die, so he must stop their evil plot. This is a side story to the first Orphen manga, but you don't have to know much about the Orphen universe, so go ahead, read on!

(Source: Izumo No Ryuu)