Minato is filled with regret during his confrontation with Obito. He thinks if only he had recognized Obito as the Masked Man during the assault on the Hidden Leaf Village, he could have stopped the attack, and maybe Kushina would not have died. The next day is the anniversary of Minato's and Kushina's deaths. Obito taunts Minato as a weak shinobi and seals every shinobi inside a barrier in order to destroy them all!
The real tough part
is about to start, Dad!
الجزءُ الصعبُ الفعليّ على وشك أن يبدأ يا أبي
Das wirklich Schwierige
beginnt jetzt erst, Papa!
La única dificultad es la que 
se nos viene ahora, papá.
La única dificultad es la que 
se nos viene ahora, papá.
Sta arrivando la parte più difficile, papà!
A parte mais difícil está
prestes a começar, pai.