In the cartoon samurai jack' s father
sent jack to face Aku, hopeing he' d
win, but believing he would not.
Jack was then thrown in to the future.
in the show he actually accepts the
fact that everyone he knew is dead...
with Aku not stopping and jack not
returning his father and mother both
had to live their remaining life either
waiting or under the assumption that
he failed and died by Aku.