I’m a NEET but When I Went to Hello Work I Got Taken to Another World (WN)

I’m a NEET but When I Went to Hello Work I Got Taken to Another World (WN) summary:

The NEET Yamano Masaru (23 y/o) went to h.e.l.lo Work and finds an interesting job offer. [A swords and sorcery fantasy, test play for Miniature Garden of Razgrad World. Extended period of time, preferred to be able to live on site. Monthly salary of 250,000 + percentage pay] Immediately goes to the interview and signs a contract.
However, the place of employment is another world. Because of the contract he’s taken there, to survive Masaru received a cheat, but he is told the shocking truth. “This world will be destroyed in 20 years.” Can a simple NEET prevent the destruction of the world?!