As someone seeking creative inspiration particularly for visual novels, and struggling to embrace writing and art after a fair lengthy dry spell, I was immediately drawn in by the protagonist's frustrations. This was really well done and quite sweet. :) The voice actors were perfect for their characters and I found myself quite enamoured with Azreal, hehe. His cheekiness made him endearing and perplexing - I was never sure of his motives.
The lore you added regarding demons and angels, the horoscope tattoos, pacts, etc. was quite unique also. I'm sure there's a lot of symbolism you've hidden in there. Religious/mythological themes are universal, a fantastic realm to experiment in, and I think you did a great job. I could feel that it was something deeply personal to you.
I've really enjoyed what I explored so far. ^_^ I still need to undergo the Angelo route! You have me most curious.
I'm looking forward to checking out your other efforts!
P.S. Your art style is really cute and distinct. :3