Ok, this one's gonna be tough, but here's my question:

Can you list anime in which a human hero gets into a romantic relationship with a catgirl? Bonus-points if it's non-comedy, but a serious story.

Just started the new episode of Sasaki to Pii-chan and thought about monster girls and then how, despite how popular catgirls are, I cannot think of a single anime in which a human hero gets together with one. All I know is Xenoblade 3, haha. Really curious if there's any anime with such relationship. If it's too hard, a human side character with catgirl is fine, too.