Sensei wa Erai!(2008)

Sensei wa Erai! is a Japanese comedy film following three troublemaking junior high students who initially dismiss their homeroom teacher as boring and annoying. When an unexpected incident shifts their perspective, the boys develop genuine affection for him and decide to help him become a better person. Joined by a former classmate now attending a prestigious private school, the quartet embarks on a mission to transform their teacher into someone worthy of respect. Blending humor with heart, the film explores themes of friendship, personal growth, and the unlikely bonds that form between students and educators. What begins as adolescent mischief evolves into a touching story about believing in someone and the power of collective effort to inspire change.