This was so clean. It feels really mechanically solid, no bugs. The theming isn't 100% for me, but if it was, it'd totally suck me in. Still, I do love the soft approach to the kink here and I love the mechanics being flavored with bears feeling their feelings, it's so cute. The battle loop had a nice groove, I really enjoyed it and it transitioned into the victory jingle perfectly. This is probably in my top 5!
There was only one point of friction for me. Of course Roguelike deckbuilders just have a ton of text to explain everything going on, that's a given. I only had a tough time was parsing multiple effects listed in the same text box, like hovering over the ongoing status effects when there's like 4 at once. Actually just separating the positives and negatives might help a lot. I'd more easily be able to tell when I should be cautions of a debuff, and it would split the wall of text in half.