After the first murder, Shiki's uncle, Director Shindou, is killed as well. The lab is in an uproar. To find out who the killer is, Nishinosono and Saikawa investigate Shiki's room. There they find a robot named Michiru, and a strange message saying "Everything becomes F."
He must have known his killer.
.لا بد وأنّه عرف قاتله
Er kannte den Täter.
El asesino debió ser un conocido.
El asesino debió ser un conocido.
Il ne connaissait pas l’agresseur.
e lui conosceva il colpevole.
Per averlo pugnalato alle spalle,
O assassino é alguém
 que ele conhecia.