She lives in Neotokyo, where adult Shinnosuke was taken prisoner by Tamiko's father, Masuzo Kaneari, and turned into a statue. She travels to the past to bring five-year old Shinnosuke to the future to free his adult self.
Her father is the evil owner of Kaneari Organic Electronics, a company that supplies energy to the city of Neotokyo. However, Tamiko never wanted to take part in the company, as she is aware of the tactics of her father to abuse the population and eliminate their competitors.
She was about to marry Toru Kazama to prevent her father from killing Shinnosuke, as part of a deal to save his real love. However, 5-year old Shinnosuke defeats Masuzo and the weeding is interrupted. After that, she continues her relationship with the adult Shinnosuke.