He drilled a hole

The video likely performed well due to its intriguing premise of a coin hack, combined with clear visual explanations and a surprising twist about the economic impact on Japan. The use of animation made the complex process easy to understand and engaging.

A video demonstrates how a modified South Korean coin, drilled with holes to mimic the size and weight of a Japanese 500 yen coin, could trick a vending machine into accepting it. However, the modified coin was worth significantly less, leading to a net loss for the user and a problem for Japan's vending machine industry.