Sakura Hayasugi appears recurrently in the Shinkansen Henkei Robo Shinkalion franchise. As the wife of Hokuto Hayasugi and mother to Hayato and Haruka Hayasugi, she forms part of the central family unit connected to protagonist Hayato.

Her debut occurs in Episode 01 of Season 1 (*Shinkansen Henkei Robo Shinkalion THE ANIMATION*) and later in Episode 30 of Season 2 (*Shinkansen Henkei Robo Shinkalion Z*). During Season 2, the Hayasugi family relocates to York, England, enabling Hayato and Haruka to pursue their dreams. Hayato subsequently returns to Japan for a New Year's visit where family ties are highlighted.

Sakura possesses short brown hair. Her name derives from the Sakura Shinkansen train service operating on the Sanyo Shinkansen and Kyushu Shinkansen lines, aligning with the series' railway-inspired naming conventions.