Wow, haven't heard this in quite a while.
I recognized the Miho Nakayama（中山美穂）song from that rumbly and slightly anarchic melody by Kyohei Tsutsumi（筒美京平）but never learned the title. It turns out to be "Tsuiteru ne, Notteru ne" which I am guessing means "You're Lucky and in the Swing of Things". Takashi Matsumoto（松本隆）wrote the lyrics which describes a young woman who knows well that she's the popular one of the neighbourhood, and she's got those feelings of exhilaration and confidence to match. She probably has more than enough string to wrap a whole ton of guys around her fingers.
Released in August 1986 as her 7th single, I'm curious to know who belongs to that male voice doing the "Oh-oh-oh, oh-oh-oh". Not sure if it could be either Matsumoto or Tsutsumi, but I'm wondering if it could even be Masami Tsuchiya（土屋昌巳）from the New Wave band Ippu-do（一風堂）.