Matsuzaka, a lonely single middle-aged man, comes home from security work and witnesses an unbelievable sight in his apartment! A beautiful stranger is cleaning the stairs! It's also no bra and no panties... Apparently she seems to be a married woman who recently moved to the next door called "NON". A cute face that is soothing just by looking at it, F-cup big breasts like marshmallows, and a beautiful pineapple panma. The appearance of an abnormal neighbor changes Matsuzaka's daily life!
