The Man who was Made a Fool by L the Most - Detective Matsuda's Case File(最もLにバカにされた男～松田刑事の事件ﾌｧｲﾙ)

Matsuda's signature is needed on some final documents to wrap up the Kira case. However, Matsuda refuses to sign. Seeking closure, Soichiro Yagami tells him to visit Ryuzaki so that he may understand L's sense of justice.