Keiji 7-nin

Japanese sword one-handed actor Tatsuya Makino (Yagami Ren) and actress Risa Hamada (Yoko Mitsuya) with a bow gun are facing each other. Eventually the scene moves and a bow gun is fired at Makino, but the arrow is real ...
Yu Amagi (Noriyuki Higashiyama), Yoshiki Ebisawa (Seiichi Tanabe), and Shin Aoyama (Takashi Tsukamoto) will be present at the scene. Makino, who died with a crossbow arrow stuck in his chest, is a national star whose Hollywood debut is scheduled for next year, and it seems that the media has already sniffed his death. There were two types of crossbows, real and dummy, for shooting, but Hamada said that he fired them without noticing that they were real. Was it just an accident, or was someone deliberately substituting it ...!?
According to Aoyama, there are 335 people in the studio, including employees, filmmakers, actors, and staff, and no one has gone out since the incident. With 335 suspects, Amagi sharpens his eyes, saying, 'There is a criminal in this studio ...'. We start questioning one by one, but everyone is suspicious and has a habit ...
Eventually, Amagi, Ebisawa, Aoyama and others learn of the shocking fact that Makino, who was a popular actor, was actually a villain who randomly touched her actress, and there was a black rumor about meds. On the other hand, Takumi Nonomura (Jin Shirasu), who had been listening to about four suspicious fires that have occurred in the last three months, learned that there was a fuss in the studio, and Takashi Machimura (photographer cleaner) I talked to Hiroo Ohtaka) and explored the relationship with the continuous suspicious fire.
Is Makino's death an 'accident' or an 'incident' !? Amagi and his colleagues challenge the mystery of a huge closed room called a studio !!