Chiharu Sakuragi is the 8th member of AKB0048 to take up the name of Haruna Kojima.

Haruna Kojima belongs to the "pioneer" generation of the first AKB48 team, Team A, that was created in 2005. Her nicknames are "Kojiharu" and "Nyan", which come from her love of cats. She is known for her airhead personality who goes at her own pace, as well as her habit of having a messy room. She is a popular member that receives many endorsements such as Metal Gear Solid, Schick Razor, shampoo. She is a prominent fashion model like fellow members Tomomi Itano and Mariko Shinoda. She is also part of the sub-unit NO3B along with Minami Minegishi, and AKB48's leader Minami Takahashi.

Stylish, takes good care of her skin, and the most girly of all the successors. A bit air-headed and naïve, but gets the job done when it counts. Her normal posture has her legs turned a bit inward, among the other “girly” habits she has.