
Profiles contain SPOILERS. You have been warned.

First Name: Kaoru
Last Name: Hitachiin
Japanese Way: Hitachiin Kaoru
Bangs Part: Left (Reader's POV)
Birthday: June 9
Sign: Gemini
Height: 5 feet 9 inches
Blood Type: B
School: Ouran High School (Private Institution)
Grade: First Year, Class A
Status: Wealthy lineage
Favorite Subjects: English, Modern Literature
Favorite Foods: Italian, anything super spicy
Personalities:
*- One word for their personalities is "dry." Very avid about things they are interested in but quite apathetic toward things they are not.
*- Unlike Tamaki, they are wholly calculating in their customer relations. They think women are easy. Still, they're just kids, so they sometimes do unexpected things. (i.e. In "Hunny's Bun-bun," they were "pretending to be scared," but in the end, they were genuinely upset.)
*- They're not really partial to spicy foods, so much as being contrary by eating whatever's "so fiery that nobody else dares try it." They do love maple syrup, though. Perhaps not the most ideal dining companions.
Kaoru Hitachiin is a first-year student at Ouran High School, and the younger of the Hitachiin twins. Though he loves mischief and chaos as much as his brother, he is calm and relatively normal when he's alone. He is usually the one that follows Hikaru's lead. However, Kaoru seems to have a lot more tact when concerning others' feelings and what they say (e.g. the Arai situation in V5). He has better control over his emotions.
Kaoru is also the one that can calm Hikaru down when he's annoyed or angry. He is somewhat more toned down behavior-wise than his brother. He is more mature, since he is aware of both his and Hikaru's character flaws (he is usually the first one to realize them). He cares deeply about Hikaru, and wants to help him grow up.
Kaoru does his best in confronting his feelings for Haruhi, even confessing to her. However, because she doesn't recognize his confession for what it is, he labels his feelings as unrequited. His feelings for her aren't so intense that he wants to have her all to himself. Kaoru steps aside for his brother, and vows he will help Hikaru in any way he can.
Kaoru would do anything for his brother, and while perceptive and aware that they need to grow up, he can't let Hikaru go on his own. He needs Hikaru to be the one to break their bonds. In that way, he is very selfish. So Kaoru pushes him away and manipulates things so Hikaru becomes self-aware of his feelings. It doesn't matter if Hikaru comes to hate or detest him, as long as Hikaru can be free.
But what Kaoru learns from Hikaru is that growing up doesn't mean they have to grow apart. So while Kaoru has always seemed to be the perceptive one, there are still things he has to learn as well.
Author Notes:*
I like these guys... and I'm finally able to draw them confidently.
*Taken directly (as in, word for word) from the character profiles at the back of Vol.1