No pressure? Just one?
I’ll go with (and again, any readers of my blog won’t be surprised)… In the Hand of the Goddess by Tamora Pierce. As a young woman (and to this day), there was so much to love about Alanna. A knight! A talented swords woman (in disguise)! In love – with a Prince – and they have sex (and no judging)! A goddess! A supernatural cat! I reread the book last year and it really held up. I’m so glad I discovered these books when I was younger.