Kenshiro was supposed to be the savior at the end of the world, but right now, he was just trying to find a job. The three brothers, Kenshiro, Toki, and Raoh, happened to reunite at a convenience store and now fight for the part-time position.
using this opportunity to give 
a speedy explanation.
¿Cómo das una explicación 
tan rápida cuando te conviene?
¿Cómo das una explicación 
tan rápida cuando te conviene?
Você só explicou tudo porque
 lhe era conveniente.