"Brave Story" is a manga adaptation of the fantasy novel by Miyuki Miyabe, illustrated by Yoichiro Ono. The narrative centers on Wataru Mitani, a young boy whose life takes a dramatic turn when his father abandons the family, leaving Wataru and his mother in emotional turmoil. Struggling with feelings of anger and confusion, Wataru encounters a mysterious boy named Mitsuru Ashikawa, who introduces him to a portal leading to the fantastical world of Vision. This realm is governed by a powerful entity known as the Goddess, who grants one wish to those who successfully complete a perilous journey to her sanctuary.

In Vision, Wataru learns that he must become a Traveler, a hero tasked with overcoming numerous trials to reach the Goddess. Along the way, he encounters a diverse cast of characters, including Kee Keema, a lizard-like warrior, and Meena, a spirited girl with her own reasons for seeking the Goddess. Together, they navigate treacherous landscapes, battle formidable foes, and uncover the secrets of Vision. The journey is fraught with moral dilemmas, as Wataru must confront his own fears and insecurities while grappling with the consequences of his actions.

Mitsuru, who initially appears as a rival, reveals a darker side as the story progresses. Driven by a desire to rewrite his tragic past, Mitsuru becomes increasingly ruthless, willing to sacrifice others to achieve his goal. This creates a tense dynamic between the two boys, as Wataru strives to maintain his integrity in the face of Mitsuru's descent into darkness. The narrative explores themes of redemption, friendship, and the power of choice, as Wataru's journey becomes not only a quest for his wish but also a path toward self-discovery.

The world of Vision is richly detailed, with its own history, cultures, and conflicts. The Goddess's role as a wish-granter is central to the plot, as her ultimate purpose and the true nature of her power are gradually revealed. The story builds toward a climactic confrontation that tests Wataru's resolve and forces him to make a pivotal decision about his future. Through its intricate plot and well-developed characters, "Brave Story" offers a compelling exploration of the human condition within a vividly imagined fantasy setting.