Signal (JP)

In the series "Shigunaru" (2018), two detectives from different eras work together to solve unsolved cases via walkie-talkie communication. One detective lives in the present, while the other lives 15 years in the past. With strange technology, they connect the two times and work together to uncover the truth behind terrible cases. They will face various challenges and conflicts, but by working together, they hope to solve the mystery and bring justice. The series is an interesting mix of crime, drama and sci-fi. Are you curious about what cases they will solve?