At the end of 1968, Akiko participated in the 19th NHK Kouhaku Uta Gassen for her song "Rainbow Lake". She said she couldn't appear on NHK because she was singing with a navel look. Akiko became a voice actress in 1969 with for the American comedy drama classic series, "" (voiced over ). In 1971, she also sing the theme song for the "Beautiful Challenger" (which was aired on TBS). The first nude was announced in her 20s. In 1973, Akiko sung the cover song " (あまい囁き, "Amai sasayaki")" by a duet with became a hit. 