A one-shot with a weird premise. Currently sits as the 23th worst rated manga on Mal. The problem with F-ken is that it doesn't have much going for it. If it's meant to be comedic and funny, I definitely didn't feel it. This story also failed to be thought provoking or meaningful. The main girl of the story is pretty unlikeable but the story somehow tries to make the reader sympathetic towards her for some reason. All that's really left is it's very weird premise for some cheap shock value i guess. The idea is weird for sure but really nothing clever. Granted, it's just a oneshot so it won't waste much of your time but it's really nothing special. Doesn't deserve the title of 23th worst manga tho.