Chocolate War(2020)

Chocolate War is a Japanese youth suspense series following Ren Nishina, a cold and ridiculed high school teacher making his debut in the classroom. When a student dies from poisoned chocolate on Valentine's Day, Nishina must investigate the mystery surrounding the incident. As he uncovers the truth, tensions rise among students and staff, revealing hidden motives and dark secrets within the school. The series blends mystery and drama, exploring themes of isolation, suspicion, and redemption as Nishina navigates his difficult position between authority and the students who distrust him. With each clue uncovered, the web of deception deepens, forcing Nishina to confront both the crime and his own role in the school community.