Kamiyain Fumi wa Bakuto ni Naritai!

A middle-school student involved in the school's mahjong club pretends to be a skilled gambler who frequents night parlors, though she has never actually participated in gambling. Her ruse causes unintended consequences when a classmate, inspired by her, attempts real gambling and falls into debt. The classmate then asks her to take her place in the gambling parlor to settle the debt. Unable to refuse, she enters the parlor and is confronted with the harsh reality of the dangerous environment she once only imagined. She must now find a way to maintain her image while escaping the situation unscathed.