In Apple Black, Volume 4, Sano faces the fears within. Will he allow them to consume him, believing it's the only way to save everyone? Or will he forge a different path?

Many years ago, humans acquired ?Black? fruits from a tree that descended from the skies, turning humans into sorcerers. Although all of Black is now extinct, humans still have sorcery inherited from their ancestors. Blessed with the Arodihs arm by Merlin, the god of sorcery, Sano is raised and trained in isolation and secrecy to be the world's savior, known as the Trinity. The savior is the one who dawns the Infinite Night, an eternal night of chaos. With his newfound freedom from isolation, Sano gets a fiery start after being admitted to Black Bottom Island's guild for young sorcerers. As his fellow gifted allies and sorcerers like Opal Wantmore accompany Sano on his quest, the treachery, betrayal, and evil that have plagued nearly all of Eden again threaten the world.

Sano fears his power can either save the world or destroy it. With his visions offering him a darker path, Sano seeks to find those responsible for his loss, and walk away from revenge and toward forgiveness to find closure. Ridding Eden of the Infinite Night will require him to uncover the secrets behind his father's research on fully rejuvenating the effects of Black in bloodlines with the immense power known as Apple Black.

The arm of the god of sorcery, Arodihs, has awakened within Sano to help rescue Black Bottom Island from the mayhem at the hands of Prince Ceazar. However, Arodihs's help comes at a cost Sano isn't prepared to pay. No one?including Sano himself?may ever see him the same way.