Great game!!! All the characters seem really cool, loved playing Ellis' route so far. Getting to know them over the three days through dialogue and sharing their hobbies really felt like a friendship/romance growing. Looking forward to replaying for the other routes and whatever bits you're planning on adding with future updates! (Though I'd second a save/backtrack option, if that's possible to implement haha)
Bugs/inconsistencies I noticed (SPOILERS)
Going to the ball mentions the room was filled with the maid cafe just hours earlier, even though that happened the day before, and I been there for the concert since then.
When talking with Ellis after the ball the 'I'm good for now' option (as opposed to ask about their turning/will ask questions later) leads to them elaborating about their turning as if asked. Then after that the 'check in about monster language' option leads to some dialogue, then just blank box, basically ending the game.