"Pheromomania Syndrome" is a manga series that explores themes of human connection, identity, and the complexities of relationships through a speculative lens. The narrative centers on a mysterious phenomenon where individuals emit pheromones that trigger intense emotional and physical reactions in others, leading to unpredictable social dynamics. The story primarily follows a young man named Haruto, who discovers he is a rare "Pheromone Emitter," capable of influencing those around him without conscious control. This ability isolates him, as he struggles to navigate a world where his presence can unintentionally manipulate others' feelings and actions.

Haruto's life becomes further complicated when he encounters Aoi, a woman who appears immune to his pheromones. Their relationship forms the emotional core of the series, as Aoi becomes both a stabilizing force and a source of conflict for Haruto. As the story progresses, it delves into the societal implications of the pheromone phenomenon, exploring how it affects interpersonal relationships, power dynamics, and personal autonomy. The narrative introduces a range of characters, each with their own reactions to the pheromone phenomenon, from those who seek to exploit it to others who fear its consequences.

The plot unfolds through a series of interconnected arcs, blending elements of drama, romance, and psychological intrigue. Haruto's journey is marked by his attempts to understand and control his abilities while grappling with the ethical dilemmas they pose. The series also examines broader themes such as free will, the nature of attraction, and the boundaries of human connection. Through its exploration of these ideas, "Pheromomania Syndrome" presents a thought-provoking narrative that challenges conventional notions of relationships and identity.