Case Closed: The Crimson Love Letter

In autumn, a bombing at Nichiuri TV causes chaos during the filming of the Satsuki Cup, a prestigious Hyakunin Isshu tournament. As the building burns, only Heiji and Kazuha remain trapped inside until Conan arrives just in time to save them. The bomber’s identity and motives remain a mystery. Amid the confusion, Conan encounters a strange girl named Momiji Ooka, who introduces herself as "Heiji’s fiancée." She’s the reigning Kyoto high school Karuta champion and is set to compete against Kazuha in the tournament. Determined to improve, Kazuha trains under Heiji’s mother, Shizuka, a skilled Karuta player. Meanwhile, the current Satsuki Cup champion is found murdered in a traditional house in Arashiyama, Kyoto. Crime scene photos show Momiji was present, and scattered Karuta cards surround the victim. Conan and Heiji join forces with the Osaka and Kyoto police to investigate both the bombing and the murder. As they dig deeper, they uncover a hidden secret tied to the Hyakunin Isshu.