Nameless Poison S01 E06 The Mystery of the Random Serial Poisoning Case and the Terrifying Stalker

Saburo Sugimura works for the PR department of a company which his father-in-law Yoshichika Imada runs. One day, Yoshichika Imada tasks Saburo Sugimura with work regarding a man named Nobuo Kajita. A complicated story unfolds from the request.