From the brilliant mind behind The Ancient Magus' Bride comes a brand-new fantastical tale about a girl and the being possessing her as they travel around the vast country of Ireland.

Haunted by a monstrous presence that clings to her soul, a girl named Saku flees Japan and journeys across the sea to Ireland. There, she encounters a silver-haired witch who may offer her refuge. But the witch's salvation comes at a price--and as Saku begins to face the power she's long feared, her path shifts from escape... to transformation.

This is the tale of a girl in flight...and the beginning of her journey to become a god.