Kai, a reserved young man in a high-rise apartment, harbors a guilty voyeuristic crush on his gorgeous neighbor Ikenaga. He secretly watches her through the window as she undresses and explores her own body, turning those stolen glimpses into fuel for his masturbation. A random morning meeting sparks an explosive night of intense physical passion. Now he marvels at how his private habit has blossomed into genuine, hot-blooded sexual adventures.

