When Kai hears that his next door neighbor, Chris, will be staying with him while her parents are overseas, he thinks nothing of it. They’re best friends, after all, and have been since childhood. To him, she’s just “one of the guys”, and a sleepover is nothing new.

But what Kai doesn’t realize is that, tomboy or not, Chris is now an adult woman. Furthermore, she has a strong sex drive, and she’s planning to use their cohabitation as an excuse to show him sides of her that Kai never knew existed.

Just as Chris’s advances begin to take effect, however, an obstacle appears: Sophie, Kai’s most recent crush. She’s a beautiful girl who radiates kindness, and naturally attracts people of both sexes towards her. Her only downfall appears to be that, for every nice word spoken about her, an equal number of heinous rumors drag her name through the mud…