Manga artist Tomomasa Takuma (Code Geass: Nightmare of Nunnally, Kurogane Communication) mentioned on his Twitter account that he talked with the publisher Kadokawa Shoten and a lawyer about a lawsuit against a blogger who criticized him and the Code Geass: Shikkoku no Renya manga.
The blog, Code Geass: Shikkoku no Renya no Tōyō to Settei Machigai ni Tsukkomu Blog wrote several complaints about the said manga, one significant complain is that it is said that it plagiarized Weekly Shonen Jump's Yagyū Reppūken Renya a historical manga made by Takashi Noguchi.
On Tuesday, Takuma reported that he made arrangements and completed the paperwork with the lawyer for legal action. As of early Wednesday, he added that he will stop using Twitter for an indefinite period.
To those who don't have the background about the manga, Code Geass: Shikkoku no Renya was also created by Goro Taniguchi (who is responsible with the scripting of the manga) the director and story co-creator of the original anime. The manga is set in the same official Code Geass history as the anime, but in Japan's historical Edo era. The story begins when Renya, a 17-year-old boy with a mechanical left arm and shuriken-throwing skills, encounters a mysterious, perpetually young woman named "Reifū C.C."
Currently the manga on hiatus, but Takuma said that the hiatus is unrelated to the blog. Takuma said that the hiatus is due to a private matter with his staff, so he can not disclose the reason.
Source: Ashita mo Yarareyaku via Anime News Network