I absolutely loved this game, same with the other three installment. Considering the ending, I was little worried, but i'm satisfied with it.
Possible spoilers for those who wish to experience it firsthand.
I personally consider it a good ending, since all is well with Pai and the sisters, altough i still feel bad for Tillday's brother, since he will be the one getting sold to the "customer". At least it's a relief to know that eventually he too will be freed by Delta and his companions.
On a side note, i've found myself liking the "trader" dude, does everything for money and profit, but still comes out like he helps.
All in all, never would have thought that a story about slavery can be wholsesome. Kinda?
I definitely recommend the previous games, if you happened to like this one, and i'm looking forward to the next one. I hope the english translation will come soon, we have a good chance to get it this year, as someone mentioned above.
On a final note, thank you very much for sharing ~