Review of OVA: No Regrets - Part 2

I could've thought of a hundred backstories that may have resulted in Levi's darker inner motives and approaches to life. I'm pretty sure that all hundred would've not resulted in a character this well designed, containing such deep rooted desires and emotionally driven self. But somehow, they managed to explain every single action he does and wants to do, every single emotion and it just makes sense. Perfect backstory to the perfect character.