Oginome spent most of her elementary and junior high years living in the town of Ranzan in Saitama Prefecture, though she attended school in the city of Sakura.
While in elementary school, Oginome won a contest and was selected to be part of a three-member group called "Milk" (ミルク, Miruku) under the CBS/Sony label.
Oginome made her solo singing debut in 1984 with "Mirai Kōkai (Sailing)" after finishing up work on Miyuki, though she did not become well known for another year or so after that.
During this slow period, her single Beloved Caribbean received wide play as a rooting song at baseball and soccer games for teams such the Seibu Lions, Fukuoka Daiei Hawks, and Cerezo Osaka.
[4] In 2001, Oginome was four months pregnant when she had a shotgun wedding with Ryuso Tsujino, a professional tennis player with whom she had graduated from Horikoshi High School.
She announced the pending birth of her third child in her blog on March 16, 2006,[5] and the safe delivery on August 10, 2006.