The principal adores his grandson very much and asks the Sket-dan to prepare a picture play to entertain him. They decide to base the story off of Momotaro, but change things up from the usual... Afterwards, he asks them to play with his grandson for an afternoon, but the kid doesn't seem interested in having fun at all.
I want to foreshadow how that 
will become the crucial keyword.
También me gustaría anticipar cual 
será la palabra clave de esta historia.
También me gustaría anticipar cual 
será la palabra clave de esta historia.
Quero prever como essa
 palavra será crucial.