Mizuki Ashiya has such a crush on a track star named Izumi Sano that she moves from the U.S. to Japan to enroll in the all-male high school he goes to! Pretending to be a boy, Mizuki becomes Sano's roommate...but how can she keep such a big secret when she's so close to the guy she wants?

After a pipe breaks in Dorm 1, Mizuki and Sano must share their room with Kadoma while it's being fixed. Kadoma is nice though--so nice he comes in to scrub Mizuki's back in the shower! Later, Nakatsu asks Sano how he feels about Mizuki and then tells Sano they're now rivals!