|Nanahara Kaoruko七々原 薫子O|
|Hair||Black, Sidehair, Spiky Bangs, V Bangs, Waist Length+|
|Body||Pale, Slim, Tall (obsolete), Teen|
|Clothes||Belt, Maid's Dress, Naked, Panties, Ribbon Tie, School Uniform, Shirt, Sport Bloomers, Sports Uniform, Trousers|
|Role||Daughter, Half-orphan, High School Student, Master, Popular, Senpai, Unpopular, Wealthy, Yamato Nadeshiko|
|Visual novels||Main character - Otome wa Boku ni Koishiteru ~Futari no Elder~|
|Voiced by||Hanataba Bouquet|
Kaoruko is the main heroine amongst all of the other heroines in Futari no Elder. She has a rough personality because her mother died in her infancy and her father brought up her all by himself. Her father operates consumer credit, her family had the misfortune of being broken up by borrowed money by the company, and she has held a grudge towards her classmates before entering Seio Girls' Academy.