Hagane no Onna(2010)

Hagane no Onna is a Japanese drama series following Haga Ineko, a former schoolteacher whose life unravels when her fiancé abandons her on the eve of their wedding. Adrift and drinking heavily, she accepts a desperate job offer: teaching a troubled class that has already driven away several educators. Ineko quickly uncovers a network of brutal bullying among the students and becomes a target herself when she takes a stand against it, facing anonymous threats and intimidation. Determined to identify the perpetrators and shield the vulnerable, she must find the steel within herself to survive the hostile environment. The series explores her transformation from a broken woman into a resilient educator willing to fight for her students, even as the school system and her own colleagues work against her.