Story:
Interesting concept, I hadn't seen RPGMaker be used to make kinetic or visual novels before! The story at the start reminded me of Until Dawn but a little more serious, which I didn't mind. I think the horror elements could have been better explored- the first twist itself isn't too bad, and even includes a fair amount of foreshadowing that worked pretty well. However the later reveal and ending left a lot of questions unanswered. The story hints at the main character's guilt and kind of ends with a slight reveal about why he feels this way, but I don't think it's explored enough to for the player to fully empathize with him- instead the ending just feels kind of confusing, and maybe rushed?
However for a game written in six hours it does do a pretty decent job of conveying the story. I especially liked the first half, there were probably too many characters but I liked how the game tried to explore their mixed feelings about why they had come up to go camping, it felt more realistic.
Gameplay:
I'm sorry but though the kinetic novel format is interesting, there aren't really any gameplay elements in here. If there were even just some choices, closer to a visual novel, then I would be able to rate this element higher.
Presentation:
That's enough about the story I guess. The music was cute, but in some parts (especially before the first twist) I think it didn't fit some of the more serious scenes. The actual kinetic novel did fit the look of one surprisingly well also, so good job on that.
Creativity:
Also despite some of the more cliche scenes the story itself was pretty unique, even if it didn't always make sense. Some of the ideas felt a bit wild to me, but they were definitively things I hadn't seen explored before.
Horror:
I think a lot of elements did have some good foreshadowing, but I think the transition from cutesy outing to horror in the woods was a bit too quick and felt a little rushed, I think some more time on this section could have helped to make the whole game a bit more spooky and perhaps to make the ending more effective.
Theme:
For the theme, I personally wished there had been more focus on 'Depths of the Earth'- maybe the characters talk about exploring a cave early on in their trip, or maybe the "bad thing" happened somewhere dark and it's something that Kirby sometimes thinks about early on- even just including a spooky flashback at the beginning before his friend startles him out of his thoughts, I think that would have worked well in the story and also made the theme and horror blend in better.
-Final thoughts-
There's definitely some areas this project could have worked on to get higher ratings within this jam. But other than that, great work! Especially on a game made in only 6 hours, that's wild!