25 parts Complete On the small, impoverished island of Akoi Bara, lived Isamu, an orphan boy with nothing but his grandmother and an impossible dream: to explore the world and reach the legendary deep-sea cave known as the Abyss.
Laughed at by his village and underestimated by everyone, Isamu grew strong in his own way-hunting in the forests, braving the wild, and sharpening his instincts. But when fate pushes him beyond his island, his journey becomes far greater than he ever imagined.
Along the way, he finds unlikely companions: Kaede, the clever but timid girl; Arata, the silent swordsman; Nao, the mischievous archer; and Koga, the teary-eyed tinkerer. Together, they face danger, unravel secrets, and chase the ever-echoing call of the Abyss.
This is not just an adventure-it's a story of dreams, friendship, and the courage to leap into the unknown.
And it all begins with one boy who refused to give up.