In order to find the truth about what happened, Tooru leads his father away from the group as they sneak into the lab.  But his father finds out what he's doing and sets an ambush for them.
It is entirely the path of your heart.
Das ist der Weg Ihres Herzens.
celle de ton cœur.
Quel sentiero è frutto del suo cuore.
Tudo é o caminho do seu coração.
Путь... своего сердца.