To be honest, I don't remember too much of this song other than the title and the opening choreography where Mie and Kei are facing each other and singing into each other's microphones. I had to listen to "Wanted" a few times before getting the impression that this was a tune that Boney M would've loved to have performed in Japanese.
"Wanted" was released as Pink Lady's 5th single in September 1977, and it certainly was wanted as it raced up to No. 1 on Oricon and stayed there for 12 consecutive weeks between September and December. In fact, by the end of the year, it became the 3rd-ranked single for all of 1977, snugly fitting into a Top 10 that had 3 other of the ladies' singles including the No. 1 song of the year, "Nagisa no Sinbad"（渚のシンドバッド）which was single No. 4.
Written by Yu Aku（阿久悠） and composed by Shunichi Tokura（都倉俊一）, the songwriting mainstays for Pink Lady, the message was simple and clear. Mie and Kei were out to wrangle the heel that stole their hearts. However, Pink Lady was the one to steal everyone else's. "Wanted" was the song that got them onto the Kohaku Utagassen for their very first appearance, and it was the next million-seller after "Nagisa no Sinbad".