…another thought with the mew!Rin and zoroark!Kai AU — it’s possible for twins to hatch out of eggs, like with this vid of two chicks in one egg.

… so perhaps the egg Kai would find would have both Rin and Len– Two baby yellow mews.

…I know Mew is a legendary but you know what shoosh, I’m going with this too. I just hadn’t thought of mew Len last night.