-Whose route would you choose first? And why?
Vincenzo's, definitely. I quite enjoy how snakey he is. He's quite powerful even if he appears harmless. I would love to see him be vulnerable at some point in the game (assuming the story allowed it) (yes, i'm saying make him cry, for fun). Edel seems very interesting too and, from reading other people's comments, he seems quite popular too, so I'd obviously play his route too. Still, hands down, Vincenzo first.
-What's your favorite scene/event?
I've seen someone say nothing jumps out, but actually I quite enjoyed the scene where MC is talking to the prince in Vincenzo's garden. If you choose to hold back, he will make a remark about Vincenzo being a snake and "moving fast" (although he doesn't seem like he'd be better than him), then the count swoops in to put an end to the interaction. If you choose to punch him, however, Vincenzo swoops in right away.
-Are you interested in playing the full release? (The full game will be PAID)
Yes. Honestly, I usually come to itch.io because I enjoy being able to play great games without having to pay for them or, if the game is behind a paywall, there's usually a free DEMO of it on the creator's page. I grew up poor, so I'm always hesitant to pay for things like games. This is mostly out of fear of having "wasted money" if I end up enjoying them less than I thought I would. Playing this DEMO, I feel that it would be worth my money.
-Are the LIs villainous enough for you?
As of right now, they're both shrouded in mystery, so it's hard to discern whether they're "villainous" enough. Vincenzo reads as a manipulative, dangerous man, while Edel seems to always be one wrong word from murdering MC for his own amusement, so I would say so.
I think writing villains is quite hard when the public is meant to love them, if you make them too evil, they might become hard to enjoy, but if you make them too god they'll just be antiheroes. Still, I feel like you've found the perfects balance with both Edel and Vincenzo.
I look forward to the full release, good job! ^^