Mifune has increased the training for the junior high and high school students.  To sweeten the deal, he has offered both groups a valuable prize, and it’s going to be big.
If not for them, we would 
never have trained so hard.
sin ellos, no hubiéramos 
competido con desesperación.
es que sin la competitividad nunca hubiéramos entrenado así.
Se não fosse por eles, 
não teríamos nos esforçado tanto.