Mikkoku wa Utau

One day, a single anonymous tip arrives at the Metropolitan Police Personnel Division Section 1 (commonly known as “Jin-ichi”). The letter alleges that investigative information regarding special fraud crimes being pursued by Investigation Section 2 is being leaked by someone, with content suggesting the involvement of the supervising inspector commanding the investigation.

Sara (Matsuoka Masahiro), who has been assigned to Jin-ichi for two years, is called in by his superiors, Noma (Nakamura Toru) and Suga (Ikeda Tetsuhiro), and ordered to take command of uncovering the truth. Together with Minaguchi (Izumi Rika), who was assigned to Jin-ichi a year ago, squad leader Haranishi (Makita Sports), and newly transferred Mori (Hamanaka Bunichi), they begin surveillance operations to monitor the supervising inspector’s activities. From the inspector’s puzzling behavior, Sara develops a theory. However, during this time, investigation materials are leaked and spread online, escalating the situation to where Sara and his team find themselves in danger.

Sequel to Mikkoku wa Utau.

Two years have passed since he joined the Metropolitan Police Department’s First Personnel Division, and Sara Masaki, who has become a key member of the Inspection Division, will face off against a “conspiracy of the organization” that will shake up the entire police force, triggered by a single tip-off letter…
This letter suggests that the Second Investigation Division is leaking information about a special fraud case it is pursuing, and that the supervising officer in charge of the case is involved. Sara begins to tail him in order to uncover the truth, but before long the information in the investigation materials is spread online, putting Sara and his team in a dangerous situation.