Nishina'S Editorial Adventures, Nishina-Kun No Henshuu Boukenki - Light Novel Wa Dungeon De Tsukurareru

A college student, Hiroki Nishina, was introduced by his senpai to a part-time job in the light novel editorial department of a publishing company, but on his first day of work, he was somehow transported to another world(?). The story is about a university student, Nishina-kun, who has been fallen into a....?! What is the fate of Nishina, a college student?!