We've been married for 4 years. - The couple, who were initially close friends, have now completely grown cold. - Marina was saddened by the rift with her husband. - At times like that, Ozawa, who lives in the same apartment complex, intervenes every time something happens... - Marina was attracted to his kindness without asking for anything in return. - Before they know it, the two become attracted to each other, and they continue to seek pleasure in secret. - However, such guilty days cannot continue forever...