Where Does Nobita's Allowance Go?

Rocco turns a childhood question into a full detective case: Nobita has Doraemon and a whole vault of gadgets, so why is he broke every month? He suspects snacks, hobbies, even the gadgets… until Tau flips the case with a very grown-up truth: the mystery isn't where Nobita's money went, but why you get a salary and still go broke. A DETOON mystery-comedy of Doraemon nostalgia that pivots straight back at the reader.