First, this isn't a show that's meant to be taken super seriously. There's obvious coincidences to set up the Romeo and Juliet esque romance, but if you suspend your disbelief over how they meet so much (which, honestly, a lot of anime use coincidences as driving points; this one's just more overt about it), it's actually a pretty enjoyable enemy to lovers romance.
Alice has really cute antics with a touch of tsundere in her attitude, and her moments with Iska are really fun and even adorable. I'd say Iska's personality is flatter though (standard justice-hearted main hero in my opinion), and I do wish he were more emotive.
The main story of two countries at war is reasonably interesting with good potential for conflict and development, and I'm curious the identity of the other elite soldiers of their forces. I like the abilities of the two mains - ice can be used in cool ways for a fight and Iska's swords have a fun ability to watch too.
Sound-wise, I do enjoy the OP, and I don't think I have any major problems with the voice acting either. Animation wise, I think it's fine, though I'm not the type to care a great deal about animation quality (story and characters is paramount for me).
Anyway, overall, I think it's a solid show so far, and I'd recommend it to anyone who likes fantasy romances and wants to see a fun enemy to lovers tale.
