John Paulo Nase is a 26-year old guy with dissociative identity disorder (DID). His alter gets triggered by the knocking of the door with words "tao po" as it reminds him of the traumatic incident that he experienced ten years ago. However, his memory of ten years ago was erased due to the trauma that he got.

Sejun Nase is John Paulo's alter who bears the painful memory that John Paulo erased from his mind. He is aggressive and violent, as he is a form of Paulo's defense mechanism. However, he got tired of Paulo's cowardice, resulting to his desire to fully own Paulo's body and consciousness.
A'tin Era is Paulo's first love and ex-girlfriend. She was oblivious about Paulo's disorder, which resulted to their breakup. Upon knowing Paulo's condition, she became the mediator between Paulo and Sejun. However, the situation worsens as A'tin triggered the existence of Paulo's other alters.
