The best Hiromasa Taguchi’s mystery movies

In Kyoto, Mayuko (Haruka Ayase) stands at a crossroad in her life. She's thinking about marriage with her boyfriend Kyoichi (Hiroyuki Hirayama). By an accidental opportunity, Mayuko stays at Honnouji Hotel. There, she meets historical figure Nobunaga Oda (Shinichi Tsutsumi) who is attempting to unify Japan.

Three murder cases take place in Tokyo. Numbers are left at the murder scenes, possibly hinting at where the next murder will take place. An investigation begins of the serial killer and Detective Kosuke Nitta works on the case. He believes the next murder will take place at Hotel Koruteshia Tokyo. To catch the killer, Kosuke Nitta goes undercover and begins working at the front desk of the hotel. Naomi Yamagishi works at the front desk of Hotel Koruteshia Tokyo. She is selected to train Kosuke Nitta for his front desk job, but they can't get along. Kosuke Nitta is focused on catching the killer, but Naomi Yamagishi prioritizes the safety of the guests. As they begin to understand each others differences, they also begin to build a trust between each other. Who is the murderer?

Toho university hospital has established an outstanding coronary surgery team under the leadership of a up and coming, star, U.S. trained surgeon that specializes in the highly risky "Batista" procedure to shrink the size of enlarged hearts. Normally this procedure has only a 60% success rate, but "Team Batista" has achieved a run of 26 straight successes....when suddenly 3 patients in a row die on the operating table. Very disturbed, the lead surgeon requests an independent investigation. The hospital turns to Dr. Taguchi who is a specialist in psychosomatic disorders who is shocked to at the assignment because she knows nothing in particular about surgery. Assured, however, that this very lack of insider specialized knowledge is in fact the "objectivity" required, she diligently begins to investigate in her own polite, but persistent manner.