Magi: The Labyrinth of Magic, Vol. 8

Aladdin is still in a deep sleep and out of the fight, and Alibaba's old friend Cassim has fallen to evil, transformed into a Dark Djinn that threatens everyone in Balbadd. The battle rages, and even Sinbad struggles to hold his ground as he fights alongside Alibaba against Cassim and Judar. And on the sidelines, more enemies wait for their chance to pounce. The forces of darkness now seem to have the upper hand...

Volume 8 of the Magi manga series by Shinobu Ohtaka.