The class president in Toru's class (1-D), he is a highly respected member of the school: due to his much-revered older brother and his own excellence in both academic performance and character, he is referred to as "Sakamoto-sama" by his peers regardless of their seniorities, and all students bow when they see him, though he feels somewhat intimidated by such reverence. For pretty much the same reasons, he has been hand-picked by Arisada as the next in line for the student council president and has on quite a number of occasions shown great leadership skills. He has five immediate family members, all of whom are amazingly beautiful (and, in his sisters' case, androgynous as well). In the past, Akira had often been pointed out as the only "average" looking person in his family by both himself and strangers. For a while, Akira felt out of place or "unworthy" of belonging to his family. When his family found out about his worries, they quickly reassured him and dismissed such ideas. His siblings (especially his older brother and older sister) usually fight for his attention, since their brother is such a kind-hearted and good-natured boy. Akira and his family are the main characters of one of Tsuda's earlier manga works, Family Complex. (Source: Wikipedia)
Seishiro's mother. She appears very briefly in the anime and in the manga. She was killed by her son in their house's garden when he was 15.
T�hru Shir� (née Magami) is Kamui's mother and shadow sacrifice, as one of the Magami clan. T�hru burns along with the house that she and Kamui lived in while on Okinawa. It is explained in the anime that she died to postpone or alleviate the disasters that would befall Kamui in the time leading up to the promised day (thus acting as his shadow sacrifice), and in the manga, that she acted as a sacrifice to prevent the premature destruction of the planet itself. Hinoto attributes T�hru's fiery death to the concentrated effect that global warming was having on the Earth. Originally, she was supposed to give birth to the first Sacred Sword, but Saya took her place. T�hru was personally in contact with the former Chairman of Clamp Academy — indeed, T�hru was just ending a phone call with her when the effects of acting as shadow sacrifice of Kamui/the Earth were set into motion, igniting her flesh. T�ru's death occurs just prior to the beginning of the first volume of the manga (chronologically) and is what causes Kamui to return to Tokyo after a six year absence. In the movie, she dies in a similar fashion by being burned to death, however she was able to give Kamui his Sacred Sword while she was dying and her last words were for Kamui were for him to go to Tokyo for the final battle and informs him about the Dragons of Heaven and the Dragons of Earth at the beginning of the film. In the X Tarot set, she and her sister represent The Tower. Source: wikipedia
Tokiko Magami is Kamui's aunt and the nurse at Fūma and Kotori's school. Tokiko attempts to alert Kamui to the significance of his ancestry and of his role in the end of the world, but they are interrupted by a battle at Togakushi Shrine in the manga, while Kamui is highly skeptical of her claim to being his mother's younger sister (despite her unmistakable resemblance to T�hru) in the anime TV series. After being attacked by shikigami in the form of "men in black", Tokiko arrives at the Togakushi Shrine severely injured just in time to give birth to the second Sacred Sword before the eyes of Kamui and Fūma. Tokiko was apparently in contact with Imonoyama Nokoru and the former Chairman of Clamp Academy. Her final message to Kamui is delivered through a video entrusted to the director of Clamp Academy, where she explains the choice Kamui must make and to carefully consider who he wishes to protect as well as what he truly desires for the Earth's fate. In the X Tarot set, she and her sister represent The Tower.
A nun 'working' for the Vatican and Charles Chrishunds' contact.
Taichi is Yuka's step-brother and a teacher at her high school. Because her father married his mother before the start of her first year and they coincidentally have the same last name, most people believe them to be blood-related. He has a huge sister-complex towards her and often shows it. He constantly wishes her to call him 'oni-chan'.