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 is attacked by a demon, and when that happens she and her childhood friend Kakeru both discover their hidden powers.

An ancient scroll decrees that they must work together to save the world from demons, but the thing is Mitsuki and Kakeru are also rivals.

Other Sources

 * Panic x Panic
 * AnimeNewsNetwork page