Ribahara Aki is an adult game designer.

In August 2005 he was involved in a scandal regarding Ail Maniax (hentai anime based on Majo Gari no Yoru ni). After his home PC got infected with a virus spread through the file sharing software Winny, various internal documents and conversation logs were copied from his pc and published, including a list of the real names of the female voice actresses involved in Ail Maniax and logs in which he was speaking lowly of his employer. As a consequence he had to publicly apologize to the involved people and had to take a pay cut and other sanctions at work.

[From AniDB]