"Peter Pan no Sora" is a manga series that reimagines the classic tale of Peter Pan within a modern and darker context. The story begins with a young boy named Sora, who lives in a dystopian world where children are oppressed and exploited by adults. Sora, along with his younger sister, Mii, endures a harsh life in an orphanage run by the tyrannical Captain Hook. The orphanage serves as a front for Hook's operations, where children are forced to work and are subjected to cruelty.

One night, Sora encounters Peter Pan, a mysterious and rebellious boy who possesses the ability to fly. Peter Pan offers Sora and Mii a chance to escape their grim reality by taking them to Neverland, a magical island where children never grow up. However, Neverland is not the idyllic paradise it initially appears to be. The island is fraught with danger, inhabited by strange creatures, and ruled by the enigmatic and malevolent King. Peter Pan and his band of Lost Boys wage a constant battle against King's forces, seeking to free the island from his oppressive rule.

As Sora becomes entangled in the conflict, he discovers that Peter Pan has his own hidden agenda. Peter Pan is not merely a carefree adventurer but a complex figure driven by a desire to overthrow King and reclaim Neverland. Sora's loyalty is tested as he navigates the moral ambiguities of the war, questioning Peter Pan's methods and the true nature of freedom. Meanwhile, Mii becomes a target for both sides due to her unique ability to communicate with the island's magical creatures, making her a key figure in the struggle for control of Neverland.

The narrative explores themes of rebellion, freedom, and the loss of innocence, as Sora and Mii grapple with the harsh realities of their new world. The characters are forced to confront difficult choices, blurring the lines between right and wrong. The series delves into the darker aspects of the Peter Pan mythos, presenting a gritty and thought-provoking take on the classic story. Through its intricate plot and morally complex characters, "Peter Pan no Sora" offers a compelling and nuanced exploration of the timeless tale.