It's a short but nice visual novel! I'm sad what happened to Ylivea cause she was starting to be my favorite character. I didn't expect that twist with Marol without saying any spoilers (I got the Marol ending).
I know it's a 15 minute game but I feel like the characters could have been more developed. When that thing happened to Zan, I didn't really care about him which heavily influenced my decision so I feel that most players would probably do the same. Decisions should be difficult to make, if that makes sense. It would have been interesting to see more routes taken in the story. I'm wanna know how Marol developed that drug.
Overall, great job on the game!