Mamejirou-kun

A six-year-old boy named Mamejiro lives in the countryside and has developed strength and bravery from assisting his parents with farming. After his father, a former wrestler, eats his ice cream, Mamejiro becomes determined to act out. With the help of his best friend Joji, he attempts to steal money from a man who is later revealed to be a burglar who had attacked a nearby agricultural cooperative. Mamejiro and Joji hand the man over to the police, and as a reward, Mamejiro receives a large amount of ice cream.