The story follows Sota, a high school boy who becomes increasingly fascinated by his mysterious classmate Mino, the girl sitting next to him. Mino has a small, unexplained pair of horns on her head, and Sota cannot help but notice them. As his gaze lingers on her, he starts to discover even more strange and curious things about the well-developed and enigmatic girl. The narrative is a slice-of-life school comedy centered on their daily interactions and Sota's reactions to Mino's peculiar traits.

The main characters are Sota Kobayashi, a first-year student who is constantly bewildered by his seatmate, and the quiet and mysterious Mino, whose odd characteristics are the main source of the story's humor. Another supporting character is a classmate named Miyabi, who becomes part of their friend group. The story takes place in a contemporary Japanese high school setting, with the plot focusing on everyday school life and the growing, quirky friendship between the two leads.

The manga is structured as a comedy, with much of the humor derived from Sota's exaggerated, deadpan expressions and his internal struggle over whether to touch or ask about Mino's horns. The story progresses in short, episodic chapters that explore different strange aspects of Mino's body and personality. However, the narrative arc is cut short. The manga concludes abruptly without ever explaining the origin or nature of Mino's horns, and there is no resolution to the characters' relationships or their school life, leading readers to conclude that the series was canceled.