[Damn. She liked it better when she thought he had weird ears. Now she's even more confused.]

I find that unlikely, evolution would have rid you of them if they truly lacked purpose. Although...it is quite possible you're currently in the process of losing them as a whole... I wonder if the people before you had larger ones and they've simply gotten smaller over time...

[Also??? Is he telling her he comes from a place where birds evolved into people??? Convergent evolution?? And here she thought everything was destined to become crabs...]

Or maybe... Of course... To attract a mate... Tell me, does your beloved find himself drawn to them?

[Oh my god girl stop trying to find the logic in gacha characters.]