Hikaru Hitachiin is a fictional character from the anime and manga series Ouran High School Host Club. He is one of the twin brothers, along with Kaoru Hitachiin, and they are known for their playful and mischievous personalities. Hikaru has spiky red hair and often wears the school's uniform, which consists of a blazer and tie. In the series, Hikaru and Kaoru run a unique host club that caters to female clients, providing entertainment and companionship. Their bond is strong, but they also face challenges as they learn to develop their individual identities and navigate their relationships with other characters, including Haruhi Fujioka.