Aku and Jack in “Unfinished Business”

Aku

You might have beaten me now, but I will destroy you in the future.

There is no future for you, Aku.

Aku

I disagree. [he shrieks fives circles and forms white holes above and below Jack]

What trickery is this? [the circles envelope Jack; he slashes but he disappears in a flash of white light] Aku-!

Aku

Do not worry, samurai. You will see me again. But next time, you will not be so fortunate.