Just finished reading this manga online and the storyline seems so appropriate for a Sess/Kag challenge. Here's a quick story summary I knicked from wikipedia: "The story revolves around Hatsumi Narita, a passive sixteen-year-old girl who lives in a company housing complex that is ruled by the tyrannical Mrs. Tachibana, the wife of the company's vice president. How a family behaves in the housing complex can affect an employee's status in the company. When her promiscuous younger sister Akane thinks she might be pregnant, Hatsumi gets talked into buying her a pregnancy test. Unfortunately, things don't go exactly as planned and Hatsumi is blackmailed by Ryoki Tachibana, the arrogant teenage son of the powerful Tachibana family who bullied her as a kid, into being his slave."
If you haven't read it, here's a link to the scanlation page:
CLICK ME!
I have some reservations about this series, as there are some adult themes, plus I don't know 'bout y'all, but I ain't too hot on dudes hitting chicks. So if you take this challenge up, feel free to change certain aspects of the original story. (There are also some slightly creepy plot twists that freaked me out... and yet I still sort of enjoyed this series. Something is wrong with me...)