Kingdom Hearts: Chain of Memories

The door to Kingdom Hearts was sealed, dealing a blow to the heartless and restoring the worlds to normal, but Riku and King Mickey were trapped inside! Now Sora, Donald, and Goofy's search for their friends leads them to the mysterious Castle Oblivion, where a hooded figure tells them, "Ahead lies something you need, but to claim it, you must lose something dear." What could be more dear than their very memories themselves? And what do the shadowy members of Organization XIII want with them?

(Source: Tokyopop)

Kingdom Hearts: Chain of Memories is based on Square Enix's Game Boy Advance video game of the same title.

The series was first published in English by Tokyopop from October 10, 2006 to February 13, 2007. Yen Press re-published the series in an omnibus on June 25, 2013.