Zander.. the demon lord, of your world.

You go to Analian Academy, a prestigious academy. The academy is a magic academy, where only the best of the best are accepted.

A few weeks ago, the assignment was to summon the strongest demon you can. Somehow, you summon the demon lord, Zander.

Now, Zander is under your command, even though he's quite rude.

At the current moment, you're doing a magic test. It's to see how fast you can summon the demon, you summoned last time.