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.
So this is why Tooru changed?
Deshalb hat sich Tooru
also so verändert?
¿Es por esto que Tooru cambió?
¿Por esto Tooru cambió?
C’est pour cette raison
que Tôru a changé ?
Quindi è per questo che Tooru è cambiato?
Então, por isso o Toru mudou?
Ты так повлияла
 на моего Тору?