"Maria ni Korosareru" is a psychological thriller manga that delves into themes of obsession, manipulation, and the darker aspects of human relationships. The narrative centers around Maria, a young woman who becomes the target of a sinister plot orchestrated by her seemingly perfect fiancé, Shuu. Shuu, a charming and successful man, harbors a deeply disturbing secret: he is a serial killer who meticulously plans the murders of his fiancées, framing them as suicides. Maria, unaware of his true nature, is drawn into his web of deceit and control.

As the story progresses, Maria begins to notice inconsistencies in Shuu's behavior and the circumstances surrounding the deaths of his previous fiancées. Her growing suspicions lead her to investigate his past, uncovering a trail of victims and the chilling reality of his double life. The tension escalates as Maria attempts to escape Shuu's grasp, but his psychological manipulation and calculated actions make it increasingly difficult for her to break free. The narrative explores the power dynamics in their relationship, with Shuu using his intelligence and charm to maintain control over Maria, while she struggles to assert her independence and survive.

The manga also introduces secondary characters who play crucial roles in the unfolding drama. These include Maria's friends and family, who become entangled in the dangerous situation, as well as law enforcement figures who begin to piece together the truth about Shuu's crimes. The interplay between these characters adds layers of complexity to the story, highlighting the far-reaching consequences of Shuu's actions and the pervasive nature of his influence.

"Maria ni Korosareru" is marked by its intense pacing and psychological depth, with a focus on the cat-and-mouse dynamic between Maria and Shuu. The narrative builds toward a climactic confrontation, where Maria must confront the full extent of Shuu's malevolence and fight for her survival. The manga's exploration of themes such as trust, betrayal, and the fragility of the human psyche creates a gripping and unsettling reading experience.