My Teacher(2020)

My Teacher is a South Korean drama about Song Jin-Woo, a dedicated contract teacher at Moojin Girls' High School who has spent four years fighting for an inclusive classroom where no student is left behind. His world shifts when Yoo Sung-Pil, a new colleague, arrives at the school—the same man who bullied Jin-Woo during their own high school days. As past trauma resurfaces, Jin-Woo must navigate the tension between his ideals of compassion and his complicated history with Sung-Pil, all while trying to protect his students and build the supportive school environment he's always envisioned.