I’m a NEET but when I went to Hello Work I got taken to another world

Yamano Masaru, who is 23 finally receives a job offer. He goes to Hello Work, stays satisfied with the schedule and salary, and plans his first business day. Earning more than 250.000 cash per month sounds like a dream, so Yamano enters into a treaty.

Soon he realizes that he should transfer to a Razgrad universe that resembles a small colorful garden. It was late for the naive guy to reject. A recruiter didn’t warn him about this fact. Moreover, Masaru was shocked that this world would disappear in 2 decades. Does the uneducated and inexperienced guy have a chance to repel an attack on Razgrad?