The sixth season of the Case Closed anime was directed by Kenji Kodama and Yasuichiro Yamamoto and produced by TMS Entertainment and Yomiuri Telecasting Corporation. The series is based on Gosho Aoyama's Case Closed manga series. In Japan, the series is titled Detective Conan (名探偵コナン, Meitantei Conan) but was changed due to legal issues with the title Detective Conan. The episodes' plot follows the adventures of Conan Edogawa.
The episodes use four pieces of theme music: two opening themes and two closing themes. The first opening theme is "Truth ~Great Detective of Love~" by Two-Mix until episode 142. The second opening theme is "Giri Giri Chop" (ギリギリ Chop?, lit. "Barely Chop") by B'z and is used for the rest of the season. The first ending theme is "Still for your love" by Rumania Monte Vide until episode 152. It is followed by "Free Magic" by Wag for the rest of the season.
The season initially ran from February 15, 1999 through September 27, 1999 on Nippon Television Network System in Japan. Episodes 135 to 162 were later collected into seven DVD compilations by Shogakukan. They were released between October 25, 2000 and December 15, 2000 in Japan.