Mugen goes under the covers with an undercover investigator who's out to put the smack down on a murderous ring of counterfeiters.
Runtime: 23 min
Starts: Kazuya Nakai, Ginpei Sato, Ayako Kawasumi, Noriko Hidaka
Director: Kazuto Nakazawa, Shin'ichirô Watanabe, Mamoru Hosoda