Kaoru Hitachiin

Japanese Name 常陸院 馨
Romaji Name Hitachiin Kaoru
Nicknames None
Series Ouran Koukou Host Club
Age 16
Weight N/A
Height 175 cm (5’9″)
Date of Birth June 9
Blood Type B


Kaoru Hitachiin, a character from the popular anime and manga series “Ouran Koukou Host Club”, is known for his unique and complex personality. He is the younger of the Hitachiin twins and is often seen alongside his identical twin brother, Hikaru. Kaoru has a devious and mischievous nature and enjoys playing practical jokes and pranks on others, especially his fellow Host Club members. Despite his mischievous tendencies, Kaoru also displays a level-headed and mature demeanor.
Unlike his brother Hikaru, Kaoru tends to be more considerate of others and has a greater sense of empathy. He values his deep emotional bond with his brother and is reluctant to let anyone else into their world. Kaoru’s caring nature is especially evident in his friendship with Haruhi Fujioka, the main protagonist of the series. He values her friendship and is grateful to her for being the first person to tell him and his brother the truth.


Kaoru Hitachiin, along with his brother Hikaru, comes from a wealthy family and is a first year student at the Ouran Academy. Their childhood was marked by loneliness, as no one could tell the difference between the two brothers without looking at the parting of their hair. This shared experience forged a deep emotional bond between them, leading to their dependence on each other.
In their last year of middle school, Kaoru and Hikaru were forced by Tamaki Suoh, the leader of the Host Club, to join their ranks. Though hesitant at first, they eventually decided to give it a try, as it was their first step towards exploring a world beyond their own. Throughout the series, Kaoru’s character undergoes significant development, especially in his relationships with his brother and Haruhi.


Kaoru Hitachiin is almost indistinguishable from his twin brother, Hikaru, due to their identical appearance. He is 175 cm tall and is often seen wearing the Ouran Academy uniform. Kaoru’s hair is parted to the left, while Hikaru’s hair is parted to the right. This subtle difference in their hairstyles is one of the few ways to tell them apart.


In the context of the Host Club, Kaoru and Hikaru are known as “little devil” hosts. They use an act of “forbidden brotherly love” to captivate their clients, with Kaoru typically playing the role of uke (the submissive partner). Their ability to convincingly perform this act stems from their deep emotional bond and their upbringing as inseparable twins.
Although Kaoru does not possess any extraordinary supernatural abilities, he excels in his understanding of human emotions and the art of hospitality. His compassionate and empathetic nature allows him to connect with others on a deeper level, making him a popular host among the club’s clientele.


Kaoru Hitachiin comes from the anime and manga series “Ouran Koukou Host Club” created by Bisco Hatori. The series follows the story of Haruhi Fujioka, a scholarship student who accidentally stumbles upon the Host Club, a group of male students who entertain female clients. Kaoru plays an important role in the series as one of the main characters and a member of the Host Club.
The character of Kaoru Hitachiin has garnered a considerable fan following due to his complex personality and compelling relationships with his brother and other characters. His journey of self-discovery and growth throughout the series adds depth and intrigue to his character, making him a beloved and memorable figure in “Ouran Koukou Host Club”.


The information provided is based on the character Kaoru Hitachiin from “Ouran Koukou Host Club” as portrayed in the MyAnimeList and Google sources.

Kaoru Hitachiin – FAQ

Who is Kaoru Hitachiin?

Kaoru Hitachiin is a fictional character from the anime and manga series “Ouran Koukou Host Club”. He is one of the main characters and a member of the Host Club, a group of attractive male students who entertain female customers.

What is Kaoru’s role in the Host Club?

Kaoru is one of two identical twins in the Host Club, the other being his brother, Hikaru Hitachiin. Together they are known as the “Hitachiin Brothers” and are responsible for providing entertainment and companionship to the female customers of the club.

What are Kaoru’s personality traits?

Kaoru is often portrayed as the more thoughtful and considerate of the Hitachiin twins. He is kindhearted, empathetic, and tends to be more sensitive than his brother Hikaru. Kaoru is also known for his mischievous nature and enjoys playing pranks.

What is the relationship between Kaoru and his brother Hikaru?

Kaoru and Hikaru have a close bond as twins. They have a strong emotional connection and are almost always seen together. However, their relationship becomes more complex throughout the series as they navigate their individual identities and develop feelings for the same girl, Haruhi Fujioka.

What are Kaoru’s hobbies and interests?

Like his brother, Kaoru has a passion for fashion and style. He enjoys designing and creating outfits, often collaborating with Hikaru on various projects. Kaoru also has a talent for playing the piano and composing music.

Does Kaoru have any character development in the series?

Yes, Kaoru undergoes significant character development throughout the series. At first, he relies heavily on his brother’s opinions and struggles to express his true feelings. However, as the story progresses, Kaoru begins to develop his own identity and becomes more independent, eventually making important decisions for himself.