The Complex

A nursing student who moves into a dilapidated apartment complex with her family. She is emotionally fragile, coping with the loss of her parents and brother while experiencing escalating supernatural disturbances. Her attempts to understand the hauntings reveal a desperate need for connection and safety, making her susceptible to Minoru's influence.

Asuka's father, part of the family that moves into the aging complex. His presence anchors the family's day-to-day life even as the house harbors unresolved grief. He represents the ordinary, struggling with the strain of a deteriorating home and emotional distance.

The mother of the Ninomiya family, whose memory and absence loom over the apartment. Her death and the family’s loss contribute to the emotional atmosphere and Asuka's fixation on the past.

A member of the Ninomiya family whose role highlights how memories persist within the space and influence Asuka's sense of belonging. His presence anchors family history inside the apartment.

A boy who died 13 years earlier and haunts the complex. His spirit is not purely malicious; he seeks company and uses projections to pull the living into painful memories.

A psychic friend who helps reveal the truth behind the hauntings. She uncovers that Shinozaki's spirit is not hostile but needs help, and warns about the danger surrounding Asuka.

A cleaner with supernatural experience who guides Asuka and attempts to exorcise the haunting. His knowledge comes with risk, and he is eventually lured into Minoru's trap, sacrificing himself.

Shinobu's vegetative girlfriend whose presence appears as a spectral projection. She embodies the danger of interacting with the dead and the consequences of delving into forgotten memories.