"The Ghosthunt: Akumu no Sumu Ie" is a supernatural manga series that revolves around the investigation of haunted locations by a team of paranormal experts. The protagonist, Mai Taniyama, is a high school student who becomes involved in the world of ghost hunting after encountering Kazuya Shibuya, a young and arrogant professional ghost hunter. Shibuya, known as "Naru" due to his narcissistic tendencies, leads the Shibuya Psychic Research (SPR) team, which specializes in solving paranormal cases. Mai initially joins the team as an assistant but quickly becomes an integral member due to her resourcefulness and bravery.

The narrative unfolds through a series of episodic cases, each focusing on a different haunted location. The SPR team investigates various supernatural phenomena, including poltergeists, vengeful spirits, and cursed objects. The cases often involve complex backstories tied to the spirits, requiring the team to uncover the truth behind the hauntings to bring peace to the troubled souls. The investigations are methodical, blending scientific approaches with psychic abilities, as the team employs tools like cameras, sensors, and spiritual mediums to gather evidence and confront the supernatural entities.

Key characters include Kazuya Shibuya, whose aloof demeanor hides a deep understanding of the paranormal; Mai Taniyama, whose grounded perspective and determination balance the team; Lin Koujo, Shibuya's stoic and skilled assistant with his own spiritual abilities; and Masako Hara, a famous medium who often collaborates with the team despite her rivalry with Mai. The dynamics between the characters add depth to the story, as their interactions range from comedic to tense, reflecting their differing personalities and approaches to solving cases.

The series delves into themes of human emotions, unresolved trauma, and the consequences of past actions, as many of the spirits are tied to tragic events or unfulfilled desires. The manga balances suspenseful moments with lighter, character-driven scenes, creating a compelling mix of horror and camaraderie. As the team tackles increasingly dangerous cases, the stakes rise, and the characters' bonds deepen, highlighting their growth and resilience in the face of the supernatural.