oh yes, the ending. the ending where, despite Jack turning down chance after chance to go back to the past in order to save the people of the future, where Ashi says O MY AKU POWERS, twows herself and Jack to the past, and defeat the evil Aku, erasing the future and rendering every time Jack jack helped someone moot since they all wound up gone anyhow. despite the whole show building up to "you can't go back, but you can make the future better for everyone." instead we get, "nope, you can go back, fuck the future!" yeah, that ending is far too complex to understand.