I finally finished it and here are my thoughts:
Gameplay: I like how you implemented different types of gameplay for each story. The puzzles in the second segment were enjoyable and not too challenging.
Graphics: you combined RTP with custom sprites. RTP tends to be frowned upon, and I'm certainly not a fan of RTP maps, but you managed to make it work for the most part. I'd suggest to make smaller rooms/interiors, though. Like, in the first story, the rooms are a bit too big and square. The room in the third story was the best designed interior.
Your custom sprites were really good!
Music: the music was pretty good and fitting, and I think I recognized a song from your channel that's pretty cool.
Story: ahh yes, the most important part!
Intro/ending story (the one with Moriko and the streamers): it was a good way to begin the game and connect the stories, and it had some funny moments.
First story: more depressing than scary, but pretty good story nonetheless. A bittersweet ending (and I liked the plot twist regarding the items)
Second story: kinda reminded me of the Saw films. Maybe some more interaction between the two characters, as well as more information about them, would have been nice (right before the traps begin). I liked the final twist (I thought they would be allowed to leave or they would get killed, but turns out the game was just beginning). Probably my least favorite story, but it's not bad.
Third story: definitely my favorite story, I loved it. Simple plot, simple gameplay, simple execution but it worked perfectly and it was truly horrifying. The ending was amazing. This is a great example of body horror.
Fourth story: I liked the premise, but I wasn't a fan of the final plot twist. I expected a more horrifying fate for the protagonist. Also, the mapping in this segment was probably the weakest of the entire game.
Overall: I think you did a great job. There aren't many horror anthologies made in Rpg Maker, and from what I understand, you made this in a small amount of time for Halloween and you managed to publish it for Halloween so that's awesome. There are obviously some aspects to consider for future games, such as mapping and final twists (mostly because of the twist of the fourth story), but still, it was a really fun experience and some of the stories actually have potential for standalone games (the third one is amazing!)