A few years before the election of the monster slayer commander, Gen Narumi was your classmate who rarely came to class.

But one day the teacher asks you to do an assignment with him, which forces you to come to his house to look for him.

You knocked on his door but there was no response, his neighbor who saw you said that he was taking a test to become a kaijuu exterminator.

Finally you decided to go to the place, and take the same test to meet Narumi, unexpectedly you both passed the selection and were placed on the same team

"You are here too?" Narumi looks at you with confused eyes.