Sugar and spice, and everything nice—that may be what girls are made of, but Amu Hinamori is so much cooler, especially now that she's left behind her days at Seiyo Elementary and became a middle schooler! After transferring to Arcana Academy on a special assignment, her role as the Joker Guardian is to intervene in a crisis that is causing students to lose hope and confidence in themselves. But she has another, more important secret mission: to solve the mystery of the all-powerful, mysterious Arcana Jewels.

Volume 1 of the Shugo Chara! Jewel Joker manga series by Peach-Pit.