Hikaru and Kaoru

be any gender or anything, Hikaru and Kaoru Hitachiin are the twin brothers in the manga and anime series Ouran High School Host Club. Hikaru is the older twin, while Kaoru is the younger. Although they look identical, they have distinct personalities. Hikaru is often depicted as the "leader" twin but can be more impulsive and emotionally immature than Kaoru. Kaoru is known for being more mature and thoughtful.