Bureaucrat Takashi Mikami takes over Class 3-2, challenging 29 students with a single question that sparks curiosity, conflict, and unexpected change…

Kanzaki probes a murder linked to his old exposé while Mikami sparks student debate. Meanwhile, ministry plots and dark connections start to surface…

While Mikami visits the murderer Yuzuru, Kanzaki digs for the truth. Mikami's past resurfaces with the arrival of a mysterious young man…

As Saejima's link to the murder goes public, Kanzaki struggles with guilt. Students debate while cryptic faxes from Yamato Takeru stir tension.

Kanzaki and Mikami meet Yuzuru and learn her painful past. Meanwhile, the class takes on a rigged business contest, defying authority with bold ideas.

A tabloid exposes Mikami's brother, Kota. Pressed by students, Mikami finally opens up, with guidance from a colleague and the ghost of his brother.

A third Yamato Takeru fax shakes the school and ministry. Haruno's expulsion sparks debate as Mikami links her case to larger societal issues.

Mikami is ordered back to the ministry, but students defend him. Investigations reveal a secret leaker, prompting a showdown with entrenched power.

Aoi Tominaga's hidden suffering emerges. As Kanzaki uncovers school corruption and special admissions, Yamato Takeru appears—but is he ally or enemy?

Collusion between the school, politicians, and bureaucracy is exposed. Mikami and students fight to reclaim education as graduation draws near…