The special is set 3 years prior to the drama series, with the story being related to a murder case that was partly referenced in the original show. Detective Kusanagi is looking to solve a murder mystery, and he gets back in touch with his former badminton teammate, the brilliant professor Yukawa Manabu.
Manabu Yukawa
Akari Shionoya
Shumpei Kusanagi
Hiromi Kuribayashi
Sakurako Jonouchi
Namie Shindo
Shumpei Kusanagi
Yukimasa Tomonaga
Yoko Hirahara
Shiro Yuge
Young Manabu Yukawa
