Originally serialized in Ribon from May to November 1997, the six chapters were collected and published in a single tankōbon volume by Shueisha in December 1997.

[4] The series is licensed for English language release in North America by Viz Media, which published its single volume on April 1, 2008.

[5] It is also licensed for regional language releases in Spain by Planeta DeAgostini and in Germany in Egmont Manga & Anime.

During one of Mikado's experiments, she touches an object similar to one that her late father made which she swallowed as a child and gains two psychic powers: telekinesis and levitation, which she activates by chanting her jinx, and begins using them to save people from getting seriously hurt.

As the series progresses, Mikado begins to return Ion's feelings, though he is initially confused as to whether it is the same as with Ai and he just likes her because she is a test subject.

According to Tanemura, she conceived the story of I.O.N after hearing someone discussing positive ions while watching a science program on the NHK.