Aura

Thirteen-year-old Rowan finds himself in Auradelle, a magical world that appears in his grandfather's drawer shortly after his death. Rowan would do anything to get his grandfather back, which means staying in Auradelle to find the Aura, a gem that holds the energy of the universe together, and has enough power to grant someone anything they wish for.
Also after the Aura is Lord Adar, a vicious man who has resurfaced again in order to regain the Aura's power for unknown reasons. Rowan finds himself lost in a maze of Auradellians, who are all born Aardians (boys with the spirit of a forest animal and the ability to run faster than average), Gwydions (boys with the ability to show their emotions via a cloud of color, and can read thoughts), Celestes (girls with the heart, soul, and wings of a butterfly, who can see whatever they want to see), and Genesises (girls with the character and wings of a bird who can control objects with their mind).
Lucky for him, Rowan soon meets new friends, all willing to help him search for the Aura as long as they get a share of wishes: Zoe, an Auradellian born hopelessly, ordinarily human, Seraphina, a Genesis with the most useless wings known to Auradelle, and Vivian, a blind Celeste. Together, they fight for their dream, but soon find out that they are keeping more secrets than information shared.
Will Rowan find his way home? Or is he lost forever, with no grandfather, no Aura, and no friends to guide him on?