Very fun story. I loved the quirky cast of characters and the creative way you mixed together golf with anime tropes. The presentation, from the custom sprites to the way they moved around the screen, was great.
My main gripe is that, while I loved the (very long) middle part of the story, the beginning and ending were much less enjoyable. You flashed out so well this fun set of side characters, and the competition among them was genuinely engaging, that the main ones ended up feeling kind of boring by comparison. The MC, while endearing, ends up not having much of a motivation of his own, which makes him immediately less engaging than the very strongly driven side characters. And the love interest feels like a non-entity for most of the story. The romance aspect in particular feels very shoehorned in and not what this story really wanted to be about.