After watching discs 1-3, I described this as one of the best anime series currently running. Disc 4 cemented that opinion, and was so good that I didn’t want to say anything for fear of spoiling it.
On disc 5 it gets better.
Much of what happens is expected, and some of it is even predictable, but in the final scene of the fourth episode on the disc, they casually drop a bombshell that has the potential to change everything. And it makes perfect sense.
The only thing that kept me from spraying my drink across the room in surprise was the fact that I’d just finished it.