Kenji and his friends are aroused by El, a sexy woman with a nice body who lives in the same apartment building. El shows off her sexy clothes to provoke Kenji and his friends. One day, El is caught in a sudden rain shower and gets soaking wet. She comes to Kenji's house saying that she forgot her house key. She goes into the bath to warm up her cold body, so Kenji can't help but peek in.