Third-year student of Mihama Academy, the Onee-san type who always takes care of others. She is known as Makina's "mom". For some circumstances, she skipped one school year at her previous school, so she is actually 2 years older than Yūji. She is tall and has a good body. Her family manages a long-established restaurant in Ginza, so she is good at cooking. Because of her mother coming from Kyoto, when getting excited, or while panicking, she picks up Kansai dialect in her speech. She is deeply interested in cars and has acquired an automatic two-wheeled vehicle license.