Ryoko Yonekura, Junpei Mizobata, Nana Katase, Masaki Suda, Kento Yamazaki, Shuhei Nomura, Mayu Matsuoka, Alice Hirose, Yua Shinkawa, Mahiro Takasugi, Aoi Morikawa, Takaaki Enoki, Tetsuya Watari, Takeshi Masu, Megumi Yokoyama, and others
"Is there a problem?" High school seniors have a new classmate: an enigmatic 35-year-old woman (Ryoko Yonekura)! Bullying, corporal punishment, truancy, shut-ins, wrist cutting, suicide, and more, high school nowadays is host to a number of problems. In this thrilling social commentary, Ryoko Yonekura confronts the darkness that looms over high school students, and their self-imposed "school caste."