Nice story :)

The way this plays out feels Joseph Campbell-ey, with Kay even refusing a literal call before the tension ramps up. Which is not bad at all from a literary perspective, but might cause audiences to see things in terms of the structure of the story rather than as a lesson. So hm, what are some ways to vividly show our protagonist doing the best with what they have rather than living in the past, or than selling out / giving up.

Or maybe Kay has given up initially, and then over the course of the story rekindles an explicit desire to do what's right now as a direct response to our villain's self-justifications.

Other rationality skills to possibly include: noticing when you're writing in the bottom line beforehand, making plans more shock-proof and modular than humans naively want to, explicitly stopping and checking the consequences of a difficult choice, noticing when you flinch away from unpleasant thoughts - sometimes that's okay, but sometimes you need to do that thing that's unpleasant to think about.