I enjoyed the continuation of this series. It felt like a complementary 2nd half to the first season. Where the first season introduced us to the characters and their motivations this season continued the story bringing it to a mirrored conclusion.
They leave room for another season as additional material comes out but even as it was left seems like it was good enough. I liked the characters and the animation everything looks nice and the story has nice pacing.
as JoeGP said > What I am sure of however is that you should watch the 2018 OVA after the 2nd season.