Five loosely connected storylines concerning the secrets and lies, the fears and tears, and the puerile potty jokes that punctuate the characters' daily (and in one eerie case, nightly) encounters.
Dead bodies with eyeballs ruptured are continuously found. Their direct causes of death are heart attacks and they acted like they were possessed right before their deaths. Mizuki is a university student. Her friend dies in front of her. Meanwhile, Haruo’s younger brother dies. Mizuki and Haruo begin to investigate together. They learn that Eiko holds a key to the mystery. Soon, Eiko's eyeballs rupture and she dies by a heart attack. Before she dies, she mentions the word "Shirai-san.”
Akari Inui and other students are kidnapped and imprisoned. They are forced to take part in a game to kill and survive. The last survivor will receive one hundred million yen.
Kotori Haneda is a university student interning at a publishing house. While doing her internship, she is partnered with another intern named Eba Shimazaki; the two start a relationship, but her happiness is not to last.
Takashi Hayama is a third year high school student. He falls in love with Azusa Oribe at first sight and they begin to date. One day, Azusa tells Takashi "people who meet me, forget about me several hours later." Takashi doesn't believe Azusa, but by chance he realizes that he forgot about Azusa. So he won't forget Azusa, Takashi begins to leave a note for himself and Azusa.
