Tomomi Maruyama

Kohiruimaki Yuichi is a police officer who established the "Science Crime Countermeasures Office", a department that specializes in issues related to cutting-edge science and technology. He welcomes the genius scientist Mogami Yukiko as an advisor and she is in charge of investigating cases related to cutting-edge science. The crimes entrusted to the Science Crime Countermeasures Office are crimes that the legal system and police organization cannot keep up with. The two will unravel the science itself hidden behind the cases and not just the so-called forensic investigation. Hasebe Tsutomu is a detective who is not familiar with science but has a long experience in the field in the former Investigation Division.

Hanasaki Mai is but an ordinary employee of a bank, with zero diplomacy. She doesn't think twice about pointing out her boss' mistakes. Her job is to investigate any wrongdoings in the bank branches. She is the voice of the suppressed staff who are unable to go against their bosses. Her partner is the veteran staff, Soma Ken, whose career with the bank had reached a dead end, no promotions in sight. Together, they resolve all the non-compliance issues at the bank.

Kenshin has settled into his new life with Kaoru and his other friends when he is approached with a request from the Meiji government. Makoto Shishio, a former assassin like Kenshin, was betrayed, set on fire and left for dead. He survived, and is now in Kyoto, plotting with his gathered warriors to overthrow the new government. Against Kaoru's wishes, Kenshin reluctantly agrees to go to Kyoto and help keep his country from falling back into civil war.

Izumi Sakuragi is a new police sergeant with the Special Investigations Office, which was set up within the Metropolitan Police in November last year. The new investigation team uses DNA analysis and the latest in forensics science to investigate cold cases as well as cases suspected to involve missing persons.

Iori Igarashi is a talented radiographer who believes the “truth” is definitely captured in CT and MRI images. He and radiologist An Amakasu work at a hospital’s radiology department where they determine the causes of patients’ illnesses and injuries.

Ishikawa Ango is a very capable detective that lives only for his job. One day, while investigating a crime scene, he gets shot in the head by the criminal that was still lurking about. Ango gets thrown over that line that divides life and death but, though he dies, doctor's are able to reanimate him and he pulls through. Yet, the bullet remains stuck in his head as the operation to remove it is very dangerous. Shortly after, he goes back to work and soon realizes that he's now able to see and talk with the recently departed.

Four young physicians are assigned to the “Doctor Helicopter” system, the latest medical system where a medical team is dispatched to the patients via helicopter to provide medical care in the field as soon as possible. The doctors experience traumatic medical situations, deal with personal ambitions, and witness the fragility of life, all while growing personally and professionally.

Shishio sets sail in his ironclad ship to bring down the government. In order to stop him, Kenshin trains with his old master to learn his final technique.