So I finally got a chance to play! I've only done Rex's route so far. I played it multiple times, and couldn't manage to unlock the other options at the end. I'm guessing I have to do the other routes in order to do so?
Overall, it was a nice time. Rex is cute, and not quite as rough as his appearance would make you think. The whole thing was shorter than I thought it would be though. The personality changing is a nice addition, though there were sometimes where what the MC would say or think was at odds with some of the choices I'd made. Being rather rude despite having high gentle stats, etc. I liked that you could choose what your hobby was, though it didn't seem to change the story much.
The music was nice and unobtrusive, all the sound effects really added to the atmosphere.
Congratulations on getting the whole thing together, it's clear a lot of work went into this.
I'll be trying for Isaac next.
edit: BTW, there's a part in the intro where Ash says a girl walks in, and then immediately afterwards calls Luka a 'he', before discovering that fact for himself.