loved this a little bit too much. as someone who has and studies the mental disorder showcased in this series, DID (Dissociative Identity Disorder), i'm in love with how they portrayed K and Ryu Sool-yeol and the struggle with having multiple identities. the fact that K was originally a psychopath in Ryu Sool-yeol's eyes but ends up being recognized as the alter that 'saved' them both. not the mention the way that his subconscious is portrayed! i find it an interesting take on the mindspace they share.
the relationships between characters are interesting and real, incredibly fleshed out and everything that just makes it great. the plot-twists, too, are on another level. the fact that everything lines up in the end and links to the final fight that Ryu Sool-yeol must participate in to get over his trauma and overcome his identity as K and Ryu is genius.
this series is just overall excellent and i can't recommend it any more than i already do.