Panic x Panic

Panic x Panic (ぱにっく×ぱにっく, Paniku × Paniku) is a shōjo manga by Mika Kawamura, published in Kodansha's Nakayoshi and collected into two volumes. It is licensed in English by Del Rey Manga.

Plot
Mitsuki and Kakeru are childhood friends—and rivals! When Mitsuki is attacked by a demon, she and Kakeru discover that they have magical powers. An ancient scroll decrees that they must work together to save the world from a demon invasion. And so begins a demon-filled adventure.

Other Sources

 * Panic x Panic
 * AnimeNewsNetwork page