Youko Sasakura  

, 笹倉 葉子

The art teacher at the school is also an old friend of Itoko's from college. They were classmates during their college years. There have been hints that they may be more than just friends, but this has never been explicitly stated. Additionally, there are suggestions that she identifies as a lesbian and has tried to get closer to Itoko throughout high school. She appears to know a significant amount about Itoko's past and has used this knowledge on occasion to gain favor or company from her. Furthermore, the art teacher is skilled at driving.