A story full of modernism that welcomes Eriko Takigawa, who is rumored to be the most beautiful mature woman in her 40s in 2009. A young man who sets foot in Tokyo for the first time for an exam and reunites with his aunt Eriko for the first time in 10 years. A beautiful aunt Eriko lived in a large mansion before her husband. A young man who has become disillusioned with the looming exam tension and the sex appeal of his 40s secretly sneaks into the bedroom where his aunt sleeps.