The Legend of Zelda: Oni Link Begins

Storyline

Brought down by a terrible curse since his recent victory on the Dark Lord, Link is changing, day by day, into a powerful creature with a destructive nature named Oni-Link. Bannished from Hyrule, the young hylian asks the princess Zelda some help. She shows him his last hope: a portal to a secret world.

Source: IGDB