Seiko Matsuda's（松田聖子）debut in 1980 may have heralded the start of the 80s wave of aidoru, but I'm not quite who launched the second wave. Perhaps it could have been Miho Nakayama(中山美穂）, often called Miporin. Nakayama, along with Shizuka Kudo（工藤静香）, Yoko Minamino（南野陽子）, and Onyanko Club（おニャン子クラブ）among others, struck me as this second group of fashionably less fluffy, more stylish cadre of female aidoru when compared to their early 80s senpai. Still the music was suitably synthpoppy.
Miho Nakayama（中山美穂）was born in 1970 in Nagano Prefecture but was raised in Koganei City, a suburb of Tokyo. In her first year of junior high school, she was discovered in Harajuku by a modeling agency and worked in commercials and magazines, before her debut as an actress in a drama as a high school punk. As that same drama's theme song, she released her first single, "C"in June 1985. It peaked at No. 12 on Oricon and became the 67th-ranking single of the year. I tried looking at the lyrics but couldn't really understand what the "C" stood for. A couple of months later, her debut album of the same name would be released.
BTW, this is my 100th post!