Midorinooka Private High School's substitute/acting Director. Ran is an old school friend of Ayako Kandaka, and an alumna of the school. She is frequently on trips abroad, and has a carefree, easygoing attitude, going so far as to wear the student school uniform at times to mingle with the students.
Because of the last pages of chapter 32, Is presumed to be the girlfriend of Ayako Kandaka.