Toshio Maeda

Toshio Maeda is an erotic mangaka and Trope Codifier for a lot of Hentai tropes.

Works he helped created or worked on

 * La Blue Girl
 * Urotsukidouji

Tropes applying to

 * Loophole Abuse: Used Naughty Tentacles to get around the ban on the portrayal of male genitalia in hentai works.
 * Naughty Tentacles: While he didn't invent them, he did codify them as a standard feature of Hentai works.
 * Nice Guy: For a small fee, you can visit his apartment and have a friendly discussion about anime and manga, even share a beer with him if you like. He also makes his work available online for the modest sum of 500 yen.