Hiromi Nonaka is a former classmate and girlfriend of Makoto Akizuki. Her family just returned from a long overseas post, and now she's all grown up. While she was gone, Akizuki grew up too and he's got a new girlfriend now. Typical love triangle, right? Well, as you might have guessed, Hiromi and Akizuki fall down some stairs and bodyswap, creating a real tangled relationship.

There's a lot more sex, bondage, and rape in this one than the summary suggests, so be forewarned.