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."
Before that, it was also you.
.كنت أنت قبلها أيضًا
Das warst du auch.
También fuiste tú.
También fuiste tú.
La fois d’avant,
c’était encore vous.
Sempre tu, Yamane.
Antes disso também 
foi você, Yamane-san.