A, A PrimeA, A Prime.

A, A Prime is a Japanese manga anthology of short stories written and illustrated by Moto Hagio. Originally spelled A, A′, it was first published in November 1984 by Shogakukan and brings together three science fiction stories published between 1981 and 1984. In addition to the titular short story which appeared in Akita Shoten's Princess, the anthology includes "4/4 " and "X+Y"-both of which were serialized in the Shogakukan magazine Petit Flower.