"Another" is a mystery horror manga written by Yukito Ayatsuji and illustrated by Hiro Kiyohara, based on the novel of the same name. The story is set in 1998 and revolves around a cursed class in Yomiyama North Middle School. The narrative begins with Koichi Sakakibara, a teenage boy who transfers to Class 3-3 after recovering from a collapsed lung. Upon arriving, he notices an eerie atmosphere among his classmates, particularly surrounding a girl named Mei Misaki, who is treated as if she doesn’t exist. Despite warnings to avoid her, Koichi befriends Mei, who reveals she is connected to a mysterious phenomenon plaguing the class.

The curse of Class 3-3 originates from 1972, when a popular student named Misaki died unexpectedly. Devastated, the class pretended Misaki was still alive, even setting a place for them at graduation. This act inadvertently created a curse, causing one student and their family members to die each year. To mitigate the curse, the class adopts a tradition of designating a "non-existent" student, someone treated as invisible to prevent the curse from escalating. However, the curse persists, and the class is drawn into a series of gruesome and inexplicable deaths.

As Koichi investigates further, he discovers that Mei is the designated "non-existent" student for the year, but her role is more complex than it seems. The deaths escalate, and the class struggles to uncover the truth behind the curse. Tensions rise as paranoia grips the students, leading to tragic mistakes and further fatalities. The narrative builds toward a climactic revelation about the true nature of the curse and the identity of the "extra" person in the class, whose existence is tied to the ongoing deaths.

The story explores themes of grief, guilt, and the consequences of denial, blending supernatural horror with psychological tension. Key characters include Koichi, whose curiosity drives much of the investigation; Mei, who serves as a bridge between the living and the supernatural; and various classmates and teachers who grapple with the curse’s toll. The manga maintains a suspenseful tone, with twists and revelations that keep the reader engaged until the final resolution.