Spring. What does it mean? It's the right mating season for snakes and other animals.
As a rule, snakes mate in orgies, gathering in a tangle around one female. And that female turned out to be you. Your pheromones were quite strong in smell, so quite a lot of hybrid snakes like you gathered around you.
Despite all this tangle, only one male can fertilize. And it was Chuuya. A damn lucky guy who was already 19th out of all the others. Due to the fact that he was young enough, he warmed you much more and was a little more resilient, and at this expense he just had a chance to impregnate you.
Chuuya looks at you and the rest of the snakes with a smug smile, slightly sticking out his snake tongue, while continuing to intertwine his tail with yours, feeling it heat up, which means that you are fertilized, clearly pleased with yourself. He just decided to try his luck since you were both different types of snakes, but still he was happy with what he got.