Really impressive effort to get something this expansive done in time for the jam, though I think the ambitious scope of this project might have also hurt it in a few ways.
Feel like it's easier if I just get to the breakdown, so spoilers from this point forward.
Implementation of Theme:
From the Harvest Sun cleric oath recited in the latter part of the story: "It is up to you to become the light in the dark." Subtle. But I think there's a couple different ways you can go from there, with Luthyr being the light in the darkness to stop the curse in an immediate sense, and also taking that a step further to stop the cycle of genocide between the wolves slaughtering goat towns and the goats slaughtering the tribes in return, as well as Luthyr illuminating his own darkness of prejudice towards wolves. While I have a few issues with the story, I think the theme comes through well enough.
Story:
This is the main area where I think you might be trying to do too much too fast. You're trying to incorporate a lot into this story, with developing the relationships between Luthyr and not one but four different guys, a bunch of lore including the goat conspiracy and monologuing villain, multiple big set piece action scenes, five different sex scenes, and then the actual immediate plot is still in there somewhere. I think trying to handle so much in such a compact setting hurts what is, seeing as this is a May Wolf entry, presumably the primary point of the VN, which is developing the relationships with the wolves. By the time Luthyr sides with the wolves at the altar, we've really only had: an awkward introduction; the kidnapping; an action scene; and your preferred flavor of lupine exposition dispenser (my preferred flavor is Rawain). Given the deeply ingrained distrust of the wolves at the start of the story, this all feels a bit rushed. Like by the time Luthyr and the wolves are looking for ways to stop the curse after beating Talrem I could barely tell you anything about any of them besides a surface level trait or two.
To expand on Luthyr trusting the wolves too fast, the one-on-one conversations all include a variation of "I should have seen that you weren't bad from the beginning" but I don't really buy this. Intentional or not, they did come off like they were shaking the store down at the beginning, and regardless of their intentions then, they absolutely still knocked out and kidnapped Luthyr. Luthyr also knows that they need him alive to complete their mission, and while all the wolves have their own version of "well I'm also a good person and care about you too", it feels a little naive for Luthyr to immediately take this at face value.
The whole Talrem thing also introduces a kinda complicated ethical issue too. I may have missed somewhere this was clarified in the text, but it came across like the wolf raids only stopped, and therefore the goat-wolf treaty was only made, because of the curse. While that doesn't necessarily justify Talrem's actions, or those of the organizations that enable him, it does add a layer of ethical complexity to the situation that's kind of glossed over since the plan is to use the freedom of movement allowed under the treaty to improve relations with the wolves, but that treaty might not exist in the first place without Talrem's actions.
I know I had a lot to say above, but there were plenty of really entertaining moments as well. Action scenes were really well done for a Renpy project, some of the banter was good, and I did notice some of the little details you threw in like Luthyr and Talrem both feeling isolated and having read the same set of books five times. I think there was just some narrative scope creep here.
Presentation:
For the most part, very very good. The number of sprites and CGs in this project is astounding for the jam timeframe (even the primarily palette-swapped imps had unique and distinguishing characteristics) and the other touches like the custom UI and music really worked as well (with a possible exception for Talrem's cheesy sax, which felt a bit out of place). It's really hard to get right, but I think you pulled off the motions of the sprites in the action scenes in a way that actually helped sell the flow of the fights.
The one knock I have on presentation is that there was a very noticeable number of typos and other proofreading errors like misplaced punctuation throughout. Not sure if you ran out of time or energy, but this one could have used another pass for polish.
Creativity:
I mean, there's certainly no shortage of creativity here. Given the above points, I think the issue for this project may have actually been too much creativity. The effort to set up the general setting and the lore that exists within it is commendable and I really appreciate trying to bring a larger scale story to life in such a short timeframe. From my perspective I just wish it was a little bit more focused though. Still more than worth a read though and I'll definitely be interested in seeing more from you.