Sain wa Man Koko Wai (2021)

Tomomaki, the demon coach of the Manda Industries women's volleyball team, imposes harsh daily training on the players. Unable to endure the brutal regimen any longer, the female team members devise a plan to find out what scares him and give him a taste of his own medicine. They soon discover what Tomomaki fears, and it turns out to be something completely unexpected...