Octo: Emotional Investigator Shinno Akari S01 E05 Episode 5

Akari attends the funeral of Akiko, the hospital director who looked after her 15 years ago. During the funeral, Akiko's secretary, Shiota, takes Akiko's relatives hostage and barricades herself inside, and Akari gets caught up in the incident. Akari sees a light blue sparkle in Shiota's eyes, which indicates "surprise." Shiota is afraid that Akiko will be killed by someone in her family...