Looking for this forever.

I'm looking for a long one. The beginning starts with a guy getting a job to be the assistant for a doujinshi artist. He figures out the artist is actually a Lol. They have sex a lot. There's even a part where they do it in front of her parents while they're all watching home videos. I haven't found it anywhere recently. Thanks in advance if anyone remembers it or finds it. I'll be looking myself.

One of my absolute favorites, Cannon Sensei Tobashisugi.

Thank you so much. I can't wait to read this again.