I find that most japanese series with female detective are similar in a way that it enjoyable with the way they solve the mysteries. Even though Kyoko doesn’t have sisters to help her as a team, her team consist of a maid cafe worker, cafe owner and a young boy. The four sisters works as a team to solve mystery but mostly the younger sister who solves most of the cases.

Both are mysteries. Both female leads are detectives and solve the mystery crimes. Each female leads has something unique about them. Kyoko forgers after sleeping and kiina has a great memory and could read super fast. She also love sweets!