"Wind: A Breath of Heart" is a 13-episode anime series that blends elements of romance, fantasy, and slice-of-life. The story is set in the fictional town of Kazune, a place imbued with a mysterious energy that grants certain individuals unique abilities. The protagonist, Makoto Okano, returns to Kazune after several years away, reuniting with his childhood friends and family. Among them is his younger sister, Hinata, who possesses the ability to manipulate wind, a power tied to the town's enigmatic energy.

Makoto's return coincides with the reappearance of Minamo Kurosawa, a girl from his past who also has a special ability: she can erase memories. As Makoto reconnects with Minamo and other residents of Kazune, he begins to uncover the deeper secrets of the town and its connection to the supernatural powers some of its inhabitants wield. The narrative explores themes of memory, identity, and the bonds between people, as Makoto navigates his relationships and the mysteries surrounding Kazune.

The series introduces a cast of characters, each with their own ties to the town's supernatural phenomena. Hinata, with her wind-based powers, serves as a central figure in the story, while Minamo's ability to erase memories creates tension and emotional complexity. Other characters, such as the cheerful and energetic Tsukiko Yahisa and the reserved but kind-hearted Shoko Okano, add depth to the narrative, each contributing to the exploration of Kazune's secrets.

The plot unfolds through a mix of episodic and overarching storylines, balancing moments of lighthearted interaction with more serious, introspective scenes. The supernatural elements are interwoven with the characters' personal struggles and relationships, creating a narrative that is both fantastical and grounded in emotional realism. The series concludes with resolutions to several key plotlines, though it leaves some aspects of Kazune's mysteries open to interpretation, allowing for a sense of lingering intrigue.