The B-side to Iwasaki's 1983 single "Typhoon Lady," "Shinju no Period" is a mid-tempo city pop tune driven by a prominent bassline and synth melodies. It exemplifies the polished production characteristic of Japanese music in the early 1980s.
- "Shinju no Period" was released as the B-side to the single "Typhoon Lady" on June 5, 1983.
- The single was released on Victor Records, a major Japanese label.
- The song is written by the popular songwriting duo Yumi Arai and Yumi Matsutoya.
Hiromi Iwasaki is a Japanese pop singer. She rose to fame in the 1970s as a teen idol.
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