A kiss? No, it was more like a peck that a father would give to his daughter when he couldn't contain his daughter's cuteness.
Their lips only touched slightly before Levan came to his senses and immediately straightened himself up again, but the atmosphere around them was no longer the same.
The two of them had just had a peaceful conversation earlier, and the tension between them finally melted away when Elennora chuckled after he figured out what was going on in Levan's mind which was pretty ridiculous for him.
They finally had another peaceful moment, but now both of them froze after the sudden contact of their lips, and even the air around them froze as well.
It was indeed just a peck that Elennora used to get from his father when he was little, but now that he was an adult, the one who gave him the kiss wasn't his father.