Nishina-kun no Henshuu Boukenki: Ranobe wa Dungeon de Tsukurareru

The dungeon life of a sequestered writer? Hiroki Nishina, a university student, 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 somehow or other fell into another world(?). What in the heck is this othe