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.
I was happy.
Ich war so glücklich.
Fui feliz.
Fui feliz.
Comme j’étais heureux !
Sono stato felice.
Eu estava feliz.
Я был... по-настоящему счастлив.