Hyouka Kazakiri
Counter Stop, 風斬 氷華
Index's first friend in Academy City is a gentle and shy individual named Aisa. While not much information exists regarding her aside from her impressive academic achievements at Kirigaoka Academy for Girls, as stated by Aisa herself. Her ability is Counter Stop, though the specific level of her power remains unknown. It's worth noting that she was among the top psychics in the Kirigaoka Academy for Girls, implying a high level of proficiency in her abilities.
It is later revealed that she is not a human at all but instead an algorithm of the psychics AIM with a conscious. The nature of her being leads her to be indestructible, as she can recreate any damage done to her body and lift objects several times her size. When not physically manifested, she exists in a realm called the Imaginary Number District which she calls "the city of shimmers," a hidden area within Academy City.
