"Triton of the Sea" is a manga series created by Osamu Tezuka, originally serialized from 1969 to 1971. The story is set in a world where ancient underwater civilizations coexist with humanity, often in conflict. The protagonist, Triton, is the last surviving member of the Poseidon Clan, a race of sea-dwelling beings with supernatural abilities. His people were massacred by the Triton Clan, a rival underwater faction led by the ruthless Poseidon. Triton is raised by a human fisherman, but his life takes a dramatic turn when he discovers his true heritage and the powers that come with it.

The narrative explores Triton’s journey as he seeks vengeance against the Triton Clan while grappling with his identity as a being caught between the human and underwater worlds. Along the way, he encounters a diverse cast of characters, including allies like the kind-hearted mermaid Ruka and the human boy Pipi, who becomes a loyal companion. Triton’s quest is fraught with challenges, as he faces not only the Triton Clan but also other sea deities and mythical creatures, each with their own agendas and powers.

The story delves into themes of revenge, identity, and the clash between civilizations. Triton’s struggle is not just physical but also emotional, as he must reconcile his loyalty to his human upbringing with his duty to his underwater heritage. The series is notable for its blend of mythology, action, and moral dilemmas, set against a backdrop of richly imagined underwater worlds and ancient lore. The plot is driven by Triton’s growth as a character, his evolving relationships with those around him, and the escalating conflicts that threaten both the sea and surface worlds.