In 1991, he released a short work titled "War and Japan" (Sensō to Nippon) published in "The Sixth Grader", a popular edutainment magazine for young people, detailing the atrocities committed by the Japanese Army during their rampage in China and Korea and is narrated by Nezumi Otoko. The work serves as a powerful counterpoint to revisionist manga like the works of Yoshinori Kobayashi and by extension a way for Mizuki to express his anger at those responsible for all of Japan's victims. From 1989 till 1998 he works on the series "" following the same approach and describing the Showa history combined with personal anecdotes. In these books Nezumi Otoko is also the narrator.