A so-called nouveau rich middle-aged man who has achieved success at work.He has money and lives in a splendid mansion, but his wife evaporates with a young man and he spends lonely days.The betrayed man's eyes are empty like glass balls...A man who can do nothing but work decided to hire a maid, but the pure white innocent beautiful girl who appeared there was abnormally sexually excited, and she was trained and dyed to be an absolutely obedient maid who liked her."Riko" is a metamorphosis that escalates day by day.