The mother of Megumi and Jun, age 40, Rin is well-known as a genius vocalist who frequently travels the world to perform concerts, having just returned from Germany to Japan. She is cheerful and energetic and, like Kei's father, looks much younger than she actually is. The twins have not seen her in two years and are notably surprised when she drops by to visit them when she happens to have a concert in Japan. Rin is apparently very protective of her children; in response to a letter Megumi had written to her mother when she believed that she had been jilted, Rin reveals a rather bloodthirsty streak and comically pulls out a gun to go and attack the boy who supposedly rejected her daughter. Rin first appears in chapter 85. (Source: Wikipedia)
Gust's cyberpunk-styled partner, a veteran Salvager. May not always agree with him but helps him out anyway. (Source: Wikipedia)
The child-like operative in charge of Operation "Silver Wild Grapevine". She had been studying Aika and had learnt how Aika fights. Aika was tricked into a pilot adaptibility physical examination, whereby Rie gathers physical data on Aika. (Source: Wikipedia)
A beautiful, ancient Habit who is 300 years old and is also a powerful sorceress. She is very cold, with the exception of her favorite juju Shell, and could be called a vampire because she drinks the blood of children she lures to her castle.
Aoi Ogata is a junior secretary of President Takishima, Kei's grandfather, and often serves as the President's emissary. He is nineteen years old. Aoi has a cold and calm character, and has always been expressionless, not smiling even once, but is actually kindhearted and socially awkward in some respects. Like Kei, he has the ability to see something only once and memorize it, though his ability made him a victim of teasing as a child. He first met Kei when he was eight and Kei was five, and came to admire and deeply respect Kei, coming to see him as an almost kindred spirit. Aoi initially appears when he is sent to Japan from London, on orders to convince Kei to transfer to London, which had been planned by Kei's grandfather. When Aoi discovers what is causing Kei to hesitate, Aoi tries to eliminate the problem: Hikari. He tries to threaten her, and Kei tries to beat Aoi up for threatening Hikari, but fails; even though he knows he is not going to convince Kei. Aoi then tries to bribe her but ends up having a cheque ripped to pieces by Hikari. At sometime, Hikari confronts Aoi and they both make up the "After School Takishima Fan Club," in which Aoi is the president and Hikari gets pictures of and writes up reports about Kei and sends them to Aoi. Afterwards, he realizes that he should not pressure Kei into the situation that he is not ready for and also realizes that he is most at peace when he sees Hikari and Kei smiling. He first appears in chapter 28.