Tarumi

During elementary school, Tarumi was Hougetsu Shimamura’s close friend. They were so close that they called each other "Shima-chan" and "Taru-chan." However, since they attended different middle schools, a distance grew between them. During her middle school years, Tarumi often skipped classes and wandered around, which led to her being labeled a "delinquent."

Unlike Sakura Adachi, Tarumi interacts with Shimamura without fear and is proactive in her approach. She has a broad perspective and an ability to understand things from a big-picture viewpoint. However, she does not have a complete understanding of Shimamura's current personality.