Eigo is the serious and mature member of Team Hiragi who attended the same middle school as Kaito and Tooru. He is good at observing and analyzing music. He is childhood friends with Rui, and they were often called "Princess" and "Knight". (Source: Wiki)
Izumi is the fashionable and flirty member of Team Hiragi. With a handsome face, he is very popular among women, even taking them out using Shuu's motorcycle. Though he resembles a delinquent, he is actually a caring guy. He is childhood friends with Shuu. (Source: Wiki)
A foundling girl raised by Shint� priests at Ise Jingū and the the Dragon of Heaven most immediately in touch with Princess Hinoto. Called the "Hidden Priestess of Ise", her specialty is sword fighting, a massive sword emerging from her left hand. Despite her cold, stoic front, Sorata falls in love with her, and ultimately she comes to reciprocate. In Tsubasa Reservoir Chronicle In the Republic of Hanshin, she's a retired miko married to Sorata. In Tokyo, she's a miko who can foresee disaster and is one of the seven fighters of the Tower faction.
Akane's friend and rival. Student of class 3-B.
Very young student (10 years old in the beginning) in Nodame's school in Paris. His goal is to be a conductor. In OVA 2, he became 15 years old and is in love with Chiaki's cousin, Yuiko.
One of the dragons of Heaven, a fourteen-year-old schoolgirl descended from the keepers of Mitsumine Jinja, masters of inugami (dog-spirits), Yuzuriha is exceedingly energetic, often diffusing latent tension between Kamui and the rest of the Ten no RyÅ«. Yuzuriha is attended by her own personal inugami, Inuki, who can transform into anything she desires and who only others with occult powers can see. She was teased throughout much of her childhood as her classmates believed Inuki was her imaginary friend. Because of this, Yuzuriha made a vow that she would never fall in love with (or even date) a man who could not see Inuki. However, the first person outside of her family that she meets who can see Inuki is ShiyÅ« Kusanagi—a Dragon of Earth. Yuzuriha falls in love with Kusanagi, regardless of their conflicting fates. In Tsubasa Reservoir Chronicle In Edonis country, she's a player who's paired up with Kusanagi Shiyuu. In Tokyo, she's one of the seven fighters of the Tower faction.
Tamaki is also childhood friends with both Konomi and Takaaki the two see her as an older sister. She left them when they were both children, having to go to an all-girls boarding school. Her promise to come back to Takaki in the final year of high school is what prompted her to leave her boarding school. She is very confident and comes from a rich family. She is well versed in traditional Japanese arts and traditions, yet still is a modern girl in her own right. In her group consisting of Konomi, Takaaki and Yuuji (Tamaki's younger brother), she is the strong and dominant personality and is acts as the older-sister figure. She often addresses herself as "Tama-oneechan".