Her fourth studio album, entitled Aishiteiru to Ittekure, reinforced her enduring popularity as a performer. The album, which featured "The Parting Song," also included a protest song entitled "Sejou (World's Context)," which became popular after it was used in the TV drama Kimpachi Sensei in 1981.
Nakajima experienced her commercial heyday in the first half of the 1980s. Seven of her studio albums that were released during this time (from Ikiteitemo Iidesuka to Miss M.) reached number one on the Oricon Charts successively. "Akujo" was released as a single in autumn 1981 and became her first number one on the Oricon singles chart since "Wakareuta" in 1977. Kansuigyo, her eighth studio album, featured another interpretation of "Akujo," and was her most commercially successful LP. The album peaked at number one on the Oricon for six weeks, and reached the top of the Japanese year-end albums chart of 1982. In the same year, she produced a couple of top three charting singles, "Yuwaku" and "Unrequited Love."