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The paperback (bunko) re-issue of Tsuhara’s book titled, Hikki Hikki Shake (short-listed for Sakunosuke Oda award in 2016) was scheduled for April but was called off abruptly after the galleys and jacket cover were almost completed.
When Tsuhara asked for an explanation, his editor told him that the sales department at Gentosha could not cooperate in the marketing of an author who is negatively impacting the sales of Nihon Kikki by Naoki Hyakuta. The controversial bestseller in a guise of a history telling endorsed by PM Shinzo Abe, is riddled with lifted passages from Wikipedia and unattributed excerpts from other works.
As the accusations by the both parties escalated, Gentosha publisher Toru Kenjo revealed the sales number for Tsuhara’s past titles in a tweet that was later deleted.
Several authors including Genichiro Takahashi and Mangetsu Hanamura have expressed that they would not publish works from Gentosha.
Mainichi Shimbun article