A professor in South Korea is calling for Nike to put an end to the Air Jordan 12, the Korea Times reports.

The reason for the proposed pulling of the shoe? The Tinker Hatfield design is inspired by Japan's flag, a symbol that the man behind the proposal, Seo Kyoung-duk, says is offensive and representative of wartime atrocities.

"I wanted to let the company know what it did was wrong and why," he said. "I would like to encourage the executives to avoid making the same mistakes in the future by helping them realize their insensitivity, indifference, and ignorance of historical facts."

Kyoung-duk sent a letter to Mark Parker, Tinker Hatfield, and other Nike executives about the shoe.

According to the Korea Times, his ire stems from the recent release of the Jordan 12 "The Master." The shoe has apparently caused trouble in Korea in the past, leading to boycotts in 2009 and 2012. Nike reacted to this controversy on the Jordan 12 before when it veered too close to its flag inspiration on the "Rising Sun" pair.