"Reimu Gets Brainwashed -Final- -Kei kei kei loan-" is a quintessential example of a specific subgenre of Touhou fan works. It is not a story of heroism or adventure; it is a focused exploration of psychological submission and the corruption of a cultural icon.
Reimu is typically portrayed as living on the edge of poverty, which makes her vulnerable. The loan shark exploits this financial anxiety to gain control over her soul. Once she is in debt, she is forced to change her personality to "pay it back." She becomes efficient, emotionless, and bureaucratic—qualities completely alien to the chaotic, hand-to-mouth existence she led before. Reimu Gets Brainwashed -Final- -Kei kei kei loan-
The subtitle is the driving engine of the entire animation's audio track. It is a direct parody of Japanese consumer finance commercials from the late 1990s and early 2000s. "Reimu Gets Brainwashed -Final- -Kei kei kei loan-"