Just imagine on Laugh Tale, late evening. Zoro and Luffy are fighting wild beasts in a jungle. They fodderize them more or less, but get a bit huffing by sheer number.
Suddenly Luffy is noticing something, Kid. He declares he needs to hurry, otherwise Kid will come before him, so he needs to leave the beasts to zoro. Zoro is fine with that and Luffy leaves in hurry. After a short amount of time, there is some deep growling in the jungle and the fear in the faces of the beasts is shown. They hurry far away and Zoro starts smiling.
"I can sense you... Killer. Ready for round 2?"
And in the jungle we can only see 2 big eyes in the dark, glowing for his prey...