Amazing game - if you like time travel and visual novels, you should definitely play it! The cast is great and MCs relationship with the LIs are all unique in their own way. The art is gorgeous. I was genuinely a little sad when Act 2 ended, because I want everything to be resolved and MC to have a happy life - she's gone through a lot (so have the LIs)!
Act 2 does end in a good place though so don't let the fact that Act 3 hasn't been released stop you from playing. I don't tend to play demos because I don't want to get too attached before full games come out, BUT this isn't a demo. This is 15-20 hours of content, maybe around 60-70% of the game?
My compliments to Cherish for creating this engaging game, and as a solo developer too (people who are talented at both writing AND drawing are really impressive to me). Excited for Act 3!