: This episode cements Yuriko’s role in the main roster and confirms her crush on Shotaro. It also introduces Itsuki Isozaki , a life science teacher at Shotaro’s school.
: The "mystery" centers around a mourning ring . Sakurako eventually explains that the "synthetic diamond" is actually a memorial diamond created from human remains. : This episode cements Yuriko’s role in the
: Instead of Shotaro and Sakurako leading the investigation, the story follows Yuriko Kogami during a summer festival. She discovers a mysterious envelope on Asahi Bridge, leading her to believe a woman dressed in black is suicidal. : This episode cements Yuriko’s role in the