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."
"I did all the cleaning.
أنا من قام بكل التنظيف"
„Ich habe alle Zimmer aufgeräumt.
"Me encargué de toda la limpieza".
"Me encargué de toda la limpieza".
« J’ai nettoyé toute la pièce.
"Le pulizie le ho fatte tutte io."
"Fui eu quem limpei
 todo o aposento.