The black samurai Yasuke in "Assassin's Creed: Shadows" caused great controversy in Japan. Someone posted a petition calling for the suspension of the sale of the game, and more than 100,000 people responded. Ubisoft apologized for the incident on July 23 and provided an explanation.

The controversy about "Assassin's Creed: Shadow" also involves historical issues. Thomas Lockley, associate professor of the Faculty of Law at Nihon University, mentioned in his book: "During Japan's Warring States Period, local celebrities started using African slaves in order to demonstrate their power." Some historians have criticized this statement as slander and are worried about the spread of "false history".

Regarding Thomas Lockley's book, Hamada, a member of the House of Representatives of Japan's "Party to Protect the People from NHK", believes that if imaginary writings are regarded as historical facts and spread around the world, the forged history will become real history.

In this regard, Hamada asked some official departments for their opinions on this matter, and the Ministry of Education, Culture, Sports, Science and Technology responded: "Generally speaking, if the content of home games is suspected of violating public order and good customs, we will deal with it carefully." The Ministry of Foreign Affairs responded: "Since this is a story in the game and has nothing to do with diplomacy, we cannot respond to this issue." The Ministry of Economy, Trade and Industry responded: "We do not comment on specific games."