Overall, I enjoyed the game! It was surprisingly complete, given its status as a jam game; while it could have used an editor to smooth out sentences and replace some awkward phrasing, I could easily understand it and it didn't really detract from the overall experience. There were only two places where the language usage caused actual confusion: Once during Dan and Lee's argument on the roof, when it almost sounded as if Dan were accusing Lee of being the murderer, and during Moon's interrogation, when some of the speaker's names and in-dialogue names were switched around. Again, nothing an editor/proofreader couldn't fix.
The art was clean and set the mood well, and it was clear that particular care was taken with Moon's sprite. The concept of the Half Moon is a fun one and could probably be expanded into a larger work, with this game serving as a prequel or sidestory. The endings made sense and I liked that being honest about his grudge got Moon's "best" ending, illustrating how destructive it can be to suppress your emotions, even if it was a little ambiguous at the end. As for critiques, I recommend making Dan's death appear in all routes: I went Let Him Talk -> Yes first and didn't see Dan's death, so while I assumed that Moon had dreamed of it, I wasn't sure because I the player hadn't seen it happen. I was also a little taken aback when Half Moon suddenly had speakers and a bear trap and everything, even though they disappeared when Half Moon did; the knives that killed Jun were fine but the gear that was used on Lee felt jarring, especially given that Dan was killed with a very real butcher's knife.
I enjoyed it a lot for what it was, and most of its flaws could be fixed with a little extra time and some proofreading. Good job, and thanks for uploading!