I just got done with my first playthrough of your game! I must say, it's so surprising this was a thing made within 4 days time. I didn't even remember catching any typos in the dialogue, haha!
First off, I find it so interesting how our heroine is named Merlin haha. I find female MCs with boyish names to be really fun and interesting! Also, the musical pieces chosen were very nice to listen to.
I really enjoyed the mystery and light horror aspects of the game. Sometimes I found Emil to be a bit too much of a jerk sometimes, but I was satisfied with the ending I got and really wanted to be his friend! I also liked Nero's character. I got worried he may have been a more... sinister existence... but was pleasant surprised.
Overall, I quite enjoyed this short VN. It pulled me in immediately and I couldn't stop playing until I reached a conclusion! Very good job ^^