Haruna Kojima was born April 19, 1988 in Urawa-ku, Saitama, Saitama Prefecture, Japan. She is a Japanese singer, actress, and a member of idol group AKB48 under Team A. Kojima started her career as a member of Angel Eyes, an idol group under Stardust Promotion. After Angel Eyes disbanded in 2001, she remained in contract with Stardust, but later switched to Ogi Production.
Kojima participated in the first AKB48 audition in July 2005, which she passed along with 23 other participants, because the application was just taking a self-image by a mobile phone and e-mail it, and assuming that she “could take 10-time prettier one, and just sent”. Although she voluntarily applied for the audition and passed, she was still looking at then-AKB48 project in a suspicious way, and tried to skip the very first dancing lesson because of her then-part-time job, but eventually participated it in response to the persuasion by Tomonobu Togasaki, Manager of AKB48 Theater.