Right after finding out she was pregnant with her daughter Haru, the man she was supposed to marry went silent. For twenty years, she worked tirelessly to ensure her daughter wouldn't face hardship as a single mother. After graduating university, finding a job, and getting married, a bright future awaited her daughter. But one day, she unexpectedly got involved with her daughter's boyfriend. Despite loving her daughter, she couldn't control the desires she had been suppressing, and was overwhelmed by a tingling, electrifying sensation unlike anything she'd ever experienced...