The Tokyo District Public Prosecutor's Office and the Tokyo Regional Taxation Bureau charged 41-year old Log Horizon and MAOYU light novel author Mamare Touno (real name Daisuke Umezu) and his intellectual property holding company m2ladeJAM (pronounced "marmalade jam") with tax evasion and violation of the Corporate Tax Law on Monday.
Touno allegedly failed to file 120 million yen (around US$996,438) in royalties from the printed versions of his MAOYU and Log Horizon novels for his income tax report in a three-year period ending last year. According to the prosecutor's office, Touno owes the Japanese government 30 million yen (around US$249,114) in taxes.
When NHK reached out to Touno for comment, he said, "I've paid my taxes, but I can't comment."

To my readers and all concerned parties,
The Tokyo Regional Taxation Bureau notfied me about the investigation on my tax reports, and I cooperated with their investigation. I have filed and paid my back taxes and completed the necessary paperwork, and so the Bureau has concluded their investigation. I've since given this incident a great deal of thought, and will endeavor to avoid such an incident in future. I sincerely apologize for having troubled and worried my readers and all concerned parties.

The special investigation department of the District Public Prosecutor's Office in Tokyo placed Umezu Daisuke ? the real name of author Mamare Touno ? under house arrest due to alleged tax evasion on Thursday. His rights management company m2ladeJAM is accused of not paying about 30 million yen (about US$250,000) in taxes. The author of Log Horizon and MAOYU was charged in April with tax evasion and violation of the Corporate Tax Law for allegedly neglecting to file about 122 million yen (US$1 million) in royalties in the three years since the fiscal year ending in March 2014.
The prosecutor's office stated in April that Touno owed the Japanese government 30 million yen in taxes.
Touno released a statement on his official website in April that said, "The Tokyo Regional Taxation Bureau notified me about the investigation on my tax reports, and I cooperated with their investigation. I have filed and paid my back taxes and completed the necessary paperwork, and so the Bureau has concluded their investigation."

NTV News 24 reported on Tuesday that the Tokyo District Court found Daisuke Umezu — the real name of author Mamare Touno — guilty of tax evasion on Tuesday. The court sentenced Touno to 10 months in prison, although the sentence is suspended for three years so he will not serve time if he remains on good behavior. The court also levied his rights management company m2ladeJAM with a 7 million yen (about US$63,000) fine.
The 42-year old author of Log Horizon and MAOYU was charged last April with tax evasion and violation of the Corporate Tax Law for allegedly neglecting to file about 122 million yen (US$1 million) in royalties in the three years since the fiscal year ending in March 2014. Touno owes the Japanese government 30 million yen (US$270,000) in taxes.
Shortly after being charged last April, Touno released a statement that said, "The Tokyo Regional Taxation Bureau notified me about the investigation on my tax reports, and I cooperated with their investigation. I have filed and paid my back taxes and completed the necessary paperwork, and so the Bureau has concluded their investigation."
Touno was placed under house arrest last December.