Tsubasa wo Hirogete/Ai wa Kurayami no Naka de

"" is the 44th single by Japanese band Zard. It was released 9 April 2008 under B-Gram Records label.
Background.
This is 2nd posthumously released single after vocalist,Izumi Sakai's death.
"Tsubasa wo Hirogete" is self-cover song of Japanese band Deen's second single. The vocalist of Deen band, Ikemori Shuuichi didn't participated in chorus part, however he appeared as guest member during their "What A Beautiful Memory" live series. The song was used as theme song in Anime television movie series .
"Ai wa Kurayami no Naka de" is re-arranged song of coupling song from their debut single Good-bye My Loneliness. Japanese singer Aya Kamiki participated in chorus part. The song was used as opening theme for Anime television series Detective Conan. To date it's the last time when Zard song was used for the Anime television series Detective Conan.
The songs weren't included in any studio album, however it was released in their compilation album "" in 2016.
It was released in two formats: regular CD edition and limited CD+DVD edition. DVD disc includes footage live "What a beautiful memory 2007" of their song Kitto Wasurenai. The jacket cover is same in both editions.
Oricon charting.
The single reached #3 rank first week. It charted for 12 weeks and sold over 83,000 copies.