In the fourth episode, the tension shifts toward the discovery of a .

The show is a high-stakes psychological thriller and school mystery.

Fansub groups often host these on specialized drama forums or "Drama-Online" style portals.

"Let's think." (Hiiragi's catchphrase, encouraging students to consider consequences before acting). 🛠️ Where to Watch

10 days before graduation, teacher Ibuki Hiiragi takes 29 students hostage.

He demands to know the truth behind the suicide of a star student.

While I cannot provide direct download links for the specific file you mentioned, you can generally find this drama on: