As Suema walks home from school with Kyouko Kinoshita, Kyouko is attacked by Nagi suspecting that she is the Manticore. Meanwhile, the Manticore kills and devours student Minako Yurihara, observed by Masami Saotome. Later, Kyouko tells Suema that Akiko Kusatsu has been handing out drugs at school, that some of the girls who took them have disappeared and that Nagi Kirima has been investigating. Suema visits Nagi at home and is surprised to find that her father is the famous author, Seiichi Kirima. Flashbacks show that Masami encountered the Manticore and formed a pact to help find other victims or dupes like Akiko who could distribute drugs to turn people into slaves. Meanwhile, Naoko Kamikishiro explains to Nagi that she found the pale zombie-like man who is an alien, captured by an organization which gave him the name Echoes and cloned him, but the clone became a man-eater. When Naoko goes to meet Echoes whom she had sheltered in the school, the Manticore which now inhabits Yurihara's body, accidentally kills her. Later, while looking for Naoko, Nagi finds Echoes but he cannot speak.