The Golden Key

In a world threatened by powerful creatures, a young man named Klein Gold sets out on a quest to find the legendary Golden key, a powerful artifact said to be the only thing that can save humanity.
Along the way, he's joined by Linder silver, a fierce warrior with a mysterious past. Together, they face countless challenges and uncover secrets about the key's origins. But in the end, Linder must make a difficult choice that changes everything.