Saburo is not very good at playing slot arcades and therefore usually bypasses them. However, when, during an ordinary walk, he notices a person who masterfully beats this devilish machine, the boy cannot help but stop and watch.

This person, who looks about Saburo's age, expertly controls the machine's claw, pulling out one prize after another with such ease, as if doing this every day for many years. Saburo whistles in surprise at this performance.