"Astral Project - Tsuki no Hikari" is a psychological thriller manga that explores themes of identity, memory, and the boundaries between reality and illusion. The narrative centers around Masahiko Sagisawa, a young man who becomes entangled in a mysterious and dangerous situation after encountering a woman named Maki. Maki claims to have lost her memory and seeks Masahiko's help to uncover her past. As Masahiko delves deeper into Maki's enigmatic background, he discovers that she is connected to a series of bizarre and unsettling events, including a string of murders and a secretive research project involving astral projection.

The story unfolds through a series of interconnected flashbacks and present-day events, gradually revealing the truth behind Maki's identity and the experiments conducted on her. These experiments, conducted by a shadowy organization, involve the manipulation of consciousness and the exploration of astral projection as a means to transcend physical limitations. As Masahiko uncovers more about the organization's activities, he finds himself drawn into a web of intrigue, where the lines between reality and the astral plane blur.

Key characters include Masahiko, who serves as the protagonist and primary point of view, and Maki, whose mysterious past and connection to the astral projection experiments drive the plot. Supporting characters include members of the organization conducting the experiments, as well as individuals from Maki's past who provide clues to her true identity. The narrative is marked by its intricate plotting, with twists and revelations that challenge the characters' perceptions of reality and their own identities.

The manga's exploration of astral projection serves as a central motif, raising questions about the nature of consciousness and the potential consequences of tampering with the human mind. The story's tension is heightened by its psychological depth, as characters grapple with their own memories and the possibility that their experiences may be fabrications. "Astral Project - Tsuki no Hikari" combines elements of mystery, science fiction, and psychological drama to create a compelling and thought-provoking narrative.