Alright, finally got around to playing this - I couldn't get too far because once I hit the 28th nothing loaded, unfortunately. Still, I got through one case, and it was fun!
Absolutely love the aesthetic and the overall style - I did a double-take that it was in Ren'Py and thought that it had been done in Unity for a few moments there, before double-checking the icon. It's sleek as hell, and I love all of the transitions and animations. I also loved that it took into account things like if I showed up super late to the scene of the crime or gave myself a male name. I hope that your choice of appearance affects minor dialogue too; I really liked that mechanic.
I did get quite a few bugs while playing it - a few variables showed up in dialogue boxes as the variable name rather than their actual values, and a few times I opened up a screen and couldn't get out of it. I also clicked on a few of the contradictions and the dialogue didn't reflect what I'd clicked on for the second option. Probably the biggest bug, though, was that if I talked to Nicole/Ariel (the name changes?) on my phone at the start of the game, and chose "Can I copy yours?" the entire game crashed and I had to rollback.
Bigger issue though - I'm too damn dense to solve the case! I had a theory about the murder (poisoned ice cubes) but I didn't really get any information which leaned in that direction...which probably just means that I'm wrong. I accused Clara in the end since she was hiding that she'd made the tea, and predictably was wrong, but still, I had fun thinking about it. I'll definitely go back and try to solve the case again!
Overall I had a great time with the game - I'll be keen to keep an eye on it as it evolves!