I was blown away. Though I'm selective of what I watch, and as such end up thinking quite highly of all of it, this was an incredible series. I found myself staying up to watch it and not wanting an episode to end. Though it's a very dramatic series, it's not overplayed or overacted. You get the raw expression of the characters' feelings unaltered, but also you see the subtleties in the dialogue and movement. The actors absolutely embodied their roles, and each felt integral to the story. Side characters such as Malwina brought rich plot without taking away from the main focuses. The parents' relationships had beautiful complexities that did so as well. The parents seemed very present in their childrens personality, in a beautiful way.
Niko and Lena were perfectly introduced before we meet Igor. The relationship between all three developed wonderfully and had it's own subtle differences in each direction. Niko thinks and feels so deeply (and is very introspective), Igor is very nonchalant but also so similar to Niko, and Lena is a bold and daring opinion speaker. The contrast between each is what makes all of it so special and true, I think.
Overall, Absolutni Debiutanci feels like the most beautiful, atmospheric, subtle, bittersweet passion project I've seen in a very long time. It is less of a series and more of a feeling and understanding as you finish watching. Fantastic.