I first played this game on v0.1, but i stopped as i wanted to get a bit more content, although it was already really great and promising at that moment.
After v0.5, considering the story, i have to say i'm even more impressed (especially for Luna). As others said before, that's probably one of the only VN around here that doesn't disappoint me considering the serious lack of sex content.
I truly wanted to follow what was going to happen next, at a point that i almost forgot i played a porn game !
So, amazing writing !
Same for music, i love when it's totally accurate to the situation, which is the case here (same for Fashion Business, music are selected for each situation, which makes the game better imo).
A lot of potential as well for the contracts system and stuff like that, i think it'll be interesting when we'll have soldiers, customizable outfits and maybe some lewd content unlocked with it (don't know if it's planned or something but it could be cool imo).
Now, what would be great, would be some real action (even a quick scene) with a totally secondary girl (if the dev wants to take his time with the main girls, Isa, Luna, Gracie and Cordia), at least to see how it turns out with sex in terms of animation etc. This way we could have a little something to judge and eventually pointing out what should be fixed for the future ones =)
Anyway, if i had to rate again, it would be a 5/5 again.