After Kurusu is stabbed, Takuru infiltrates AH Tokyo General Hospital, hoping to find the creator of the sumo stickers.  When he gets there, he, Onoe, and Itou are forced to hide in the basement to avoid being spotted.  Inside the basement's autopsy room, they find a secret entrance that leads to an underground laboratory where terrible experiments were once conducted.  Takuru thinks he's been here before...
Then she was definitely 
part of a human experiment.
إذاً من المؤكّد أنّها كانت جزءاً
من تجربةٍ على البشر
Hierbei handelt es sich zweifelsohne
um Experimente am Menschen.
Entonces realizaban
experimentos con humanos.
Entonces, experimentaban con humanos.
C’est sans aucun doute
des expériences sur des sujets humains.
Ma questi... ne sono certa,
erano esperimenti su esseri umani!
Então ela certamente fez parte
 de um experimento humano.