Story was very enjoying and intriguing and kept me in a constant state of curiosity.
Still there were many parts where story stopped making sense like in case of Rui breaking up with Natsuo without any valid reason and all..
The pace was very slow and tiring but the plot and story compensated for that.
Most of all, near the end I had very high hopes of some cool ideas which author will use to get Natsuo out of his completely twisted life but the ending was not at all satisfying.
Overall it was quite a good story and I respect the author a lot to come up with such a great piece