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."
The last person to open the door was Yamane-san.
.آخر من فتح الباب كان ياماني-سان
Als Letztes hast du die Tür
vom Dach geöffnet, Yamane.
Fuiste el último en abrir 
la puerta, Yamane-san.
Fuiste el último en abrir 
la puerta, Yamane-san.
Vous êtes la dernière personne
qui a ouvert la porte du toit.
L'ultimo ad aver aperto la porta
sul tetto è stato Yamane.
A última pessoa a abrir a porta
 do terraço foi o Yamane-san.