He is the sacrifice of the male Zero pair. He is the more cruel and brutal of the two; however, they are both rather blunt and cold towards others. A good example of this is in volume 5, when Ritsuka rushes home after curfew, and Soubi remarks that Ritsuka will probably get a "beating". Natsuo and Youji are both amused by this, and say, "A mother abusing her child! That's the best!" while grinning happily.  Nagisa is unashamedly biased towards Youji, often ignoring Natsuo. According to Youji, this is because he bears a significant resemblance to Nagisa's younger sister.   (Source: Wikipedia)

Twelve-year old Aoyagi Ritsuka is left with his insane mother as his only family when his brother, Seimei, is killed suddenly. After moving to a new school, he meets Agatsuma Soubi, who claims to have known his brother. Ritsuka eventually discovers that Soubi and Seimei used to be a fighting pair, whereby Soubi was the "Fighter" and Seimei was the "Sacrifice". Now that Seimei is gone, Ritsuka has inherited Soubi, who will become his "Fighter". After learning that Seimei was killed by an organisation known as the "Seven Moons", Ritsuka decides to investigate into his brother's death, with the sometimes useless help of Soubi, along the way.
 
(Source: Anime News Network)

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It was announced on the day of Kiramune's 5th Anniversary that he will be the 7th member, and his debut will be August 28, 2013.



He is also the German voice of:
- Christopher Masterson as Francis in _Malcolm in the Middle_
- Donald Faison as Dr. Christopher Duncan Turk in _Scrubs_
- Simon Helberg as Howard Joel Wolowitz in _The Big Bang Theory_
- Martin Freeman as Dr. Watson in _Sherlock_

Aoyagi Ritsuka is one troubled 6th grader. Two years ago, he mysteriously lost his memory and developed an alternate personality. His mother constantly berates (and occasionally beats) him, asking what happened to the "real" Ritsuka, and his only defender and friend, his older brother Seimei, was recently killed. 
Suddenly, Seimei's apparent "friend," Soubi, appears. Soubi tells him that Ritsuka's true name is "Loveless," and that Soubi was assigned by Seimei to take care of Ritsuka and protect him. Ritsuka soon gets sucked into a bizzare underground society where teams of people, a "Fighter Unit," and a "Sacrifice," battle using elaborate and beautifully-phrased spells. 
He seeks both acceptance of himself, and the answer to the mystery of who killed his brother and why. 
(Source: Tokyopop)

Youji Sagan