Hello World

In 2027, a technologically transformed Kyoto is home to high schooler Naomi Katagaki, a shy, withdrawn boy who keeps to himself. He shares a love of books with classmate Ruri Ichigyou, but her blunt, chilly demeanor makes her difficult for him to approach, leaving Naomi watching from a distance instead of speaking up.

During a walk, Naomi sees a fleeting crimson aurora streak across the sky, and soon after crosses paths with a three-legged crow and a hooded stranger. The man claims to be Naomi from ten years in the future, warning of a tragedy that will befall Ruri shortly after they begin dating—and insisting he has returned to prevent it. Unsure what to believe but unwilling to ignore the possibility, Naomi follows his older self’s guidance and tries to grow closer to Ruri, hoping his choices can rewrite what’s to come.