Final Fantasy Lost Stranger, Vol. 7

On their search for clues about the resurrection spell
"Raise," Shogo and his party wander into the Great Library that lies
in the magical kingdom of Mysidia. There, they are ensnared in the monster
Byblos's book world, a limitless land which takes the form of their
enemy's imagination. Able to read their minds, Byblos uses their greatest fears
against them, transforming into the manifestation of their despair. Alus and
Shogo awaken their powers and resist, but is there any hope of escape...?