Due to the controversial content of the series, there have been many criticisms of the manga, the main complaint being that the series portrays Koreans in a negative light, while glossing over anything negative related to the Japanese.
Regarding character portrayals, one complaint in The New York Times article is that "The Japanese characters in the book are drawn with big eyes, blond hair and Caucasian features; the Koreans are drawn with black hair, narrow eyes and very Asian features."