At 33 years old, Aoishi Hanae has a job but hasn't had much luck in the boyfriend department - and she's still a virgin. There have been opportunities, but she's let them slide. One night while out drinking with colleagues, Hanae confides in Tanokura Yuuto, a charming 21-year-old who works part-time at her company and recently ended a relationship with his girlfriend.
The next morning, Hanae wakes up in a hotel room next to Yuuto, only to discover that they apparently agreed to start dating and ended up having sex. Her memories of the night are hazy, leaving her unsure of what to do. Yuuto is taken aback by her lack of recollection but still wants to pursue a relationship.
Now Hanae, older yet less experienced in romance, must navigate this unexpected relationship with someone younger and more experienced than herself.
