The slime had a hard time fighting against Theo. It seemed that after the previous defeat, Theo had done everything he could in order to deal with the slime.
He realized that the slime might be strong and a trick wouldn't be useful against absolute power. That was why he increased his strength to a level where the gap between them could be closed with a trick.
And the more annoyed the slime became, the more everything went according to Theo's plan.
Though, Theo couldn't really feel that happy. The slime might be annoyed by all these cheap tricks, but the longer the battle passed, the more the slime got used to it. By that time, all kinds of tricks he used would be useless.
That was why he had to finish this battle as soon as possible.
One of the two Theos pointed his hands at the slime, using the Inverted World once again.