This game has so much potential! I haven't even finished the playthrough, but I already couldn't wait to leave a comment.
Apart from the characters (including amazing female side characters in an otome), the interesting setup, and the gorgeous art, what really stood out to me was this clear love for some of the classical RPG games. The "speaking" noises from Undertale and the art/design caught my attention at once! And I'm really sorry if I'm overthinking (I don't mean insult or disrespect), but your character designs remind me of Deep Sea Prisoner - in the best possible way! Absolutely adore the stylish designs that speak loudly about the characters' personality before they even speak a word!
All in all, great job - I really look forward to what else you might come up with!