The pair managed to earn roughly two million yen (US$18,870) in less than a year of running the scheme.
The mother-and-son team divided up the labor for their operation, with the son in charge of purchasing the knockoff goods and Mom handling shipping to customers in Japan.
Almost heartwarming, because the purpose of their teamwork was to sell counterfeit Pokémon merchandise.
Since last fall, the pair have been importing knockoff Pokémon trading card game playmats from China and reselling them on e-commerce sites to customers in Japan.