, a self-made man who achieved his dream of becoming a wealthy NEET (Not in Education, Employment, or Training) through real estate and day-trading. His life of luxury is upended when he is transported to a fantasy world—not as a hero, but as an indentured laborer for the Raiza'ha Mining Corporation. Capitalist Satire

: A naive, timid crocodile-like demi-human who serves as Kinji’s first companion and literal corporate partner in crime.

The series succeeds due to its colorful cast of misfits who form an alternative corporate rebellion:

Long before focusing on illustration books, the circle was known for developing classic text-based visual novels, including titles like Koukan☆Nikki (交換☆日記) spanning from 2004 to 2008.

: Kinji is described as "ruthless, cutthroat, and narcissistic". Unlike typical heroes, he uses his knowledge of manipulation and market mechanics to scheme his way back to the top. Industrial Fantasy

Because physical items produced by The Dungeon In Yarn are distributed under tight print-runs at local Japanese conventions, they rapidly turn into ultra-rare collectibles.