Prologue

Kivotos... the beautiful city that was founded by the union of thousands of academies. It has everything a student needs, mostly guns and literal tanks.

Meet our Sensei, a person with enormous intelligence and totally "wise" knowledge, known to lead armies of soldiers to war... if the war was about not making the school wanting to kill each other. That's not the only thing Sensei has to deal with. As time passes on, he has to deal with different kinds of students with different personalities.

Let's just say... he has a lot of work to do, including some different kinds of contracts if you know what I mean~