After midnight in the lower levels of the Bureau, just outside the central vault corridor. The black-glass walls reflect ledger lines instead of faces.

At the locked vault entrance, Bureau law reacts to Wenruo's presence.

Inside the central vault, the storage place for sealed sins and senior authority records.

Senior Auditor Cao appears in the central vault, calm and prepared.

Wenruo presents the confession according to Bureau ritual.

Cao reads the confession title and names the murder aloud.

Cao explains the consequences of a true confession in plain terms, using procedure as pressure.

Wenruo answers only with lawful statements, proving she is not lying.

Cao states the receiving auditor rule, making clear what his stamp will do.

Wenruo pushes Cao toward the precise role required for the trap.

The old legal format is shown; Cao reads the summary and misses the buried clause.

Cao offers a last chance; Wenruo refuses to step outside the law.

Cao stamps the confession, completing the legal trigger.

The hidden chain-of-command liability clause activates in plain language.

The ledger pulls the buried murder chain into Cao's mind, beginning with Li Yan's refusal.

The rest of the chain arrives: poisoned ink, substitution, false ruling.

The Bound Ledger Presence fuses to Cao, changing him from judge to culprit.

The murder and its memory leave Wenruo and settle into Cao.

Wenruo becomes memory-stripped; Cao realizes the memory cannot be removed.

While Cao is trapped, Wenruo takes what she came for: a way out of Hexing City.

Wenruo finds her final instruction to herself inside the stolen permit case.

Wenruo leaves Cao trapped in the central vault.

Wenruo reaches the Bureau doors as the city gate waits beyond the black-glass steps.

Wenruo validates the stolen travel permit and claims her own name.