Over a decade ago, an underground manga artist named Kon Dom (昆童虫, with "Dom" being his surname) drew a short manga called Keyhole (鍵穴 or "kagiana") about a doorknob that comes to life. Written by a guy who uses the pen name "Kon Dom" (geddit?), you can quickly surmise that the manga ventures into adults only territory.
Perhaps in large part due to Doorknob Girl's success, a Japanese adult movie company remade Kon Dom's manga into a live-action film, which stars Kokomi Naruse and is out later this month.
Keyhole was not a mainstream manga by any means, and Kon Dom is not a well-known manga artist. But this recent doorknob fetish means that he's once again working on Keyhole, retitled as I'm a Doorknob (あたし、ドアノブ), and happy about the upcoming live-action version.
"It's been over ten years since I first released this manga," Kon Dom blogged, "and there to be people who notice it this year, I am truly grateful."