Signal ~ Chouki Mikaiketsu Jiken Sousahan Special

The story begins shortly after the finale episode of the 2018 drama, and then moves to 2020, two years later. The story begins shortly after the finale episode of the 2018 drama, and then moves to 2020, two years later. The story begins shortly after the finale episode of the 2018 drama, and then moves to 2020, two years later. The story begins shortly after the finale episode of the 2018 drama, and then moves to 2020, two years later.