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."
Maybe she liked things clean.
.ربما كانت تحب أن تبقي الأشياء نظيفة
Hatte sie einen Putzfimmel?
Tal vez le gustaba la limpieza.
Tal vez le gustaba la limpieza.
Le professeur devait être maniaque.
Alla dottoressa piaceva la pulizia?
Será que a Doutora 
gostava de limpeza?