That was something! I loved the comedy of RIP Harmony, especially the dialogues between Zest and Bliss, even though I'm not usually a client of some of the slang used in the VN. The one little criticism I can give is that I don't really see the theme, but eh, I really don't think it's that big of a deal.
As for the technical aspect, you made a great use of the sprites and I also appreciate your use of music and your backgrounds!
I, short, I think if you approach RIP Harmony as a silly VN made for fun, I feel like that would be the right mindset to appreciate it fully!