With the finale episode, one of the likeable characters in Vincenzo, which was Jang Han Seo portrayed by Kwak Dong Yeon, died. Yes, it is indeed regrettable that he wasn't able to continue living despite choosing a different path to walk on but if we're to think about his origin, he's still part of Babel. Jang Han Seo had been a puppet all his life by his brother, yes he may had no choice but putting a blind eye on the cruel things he's surrounded by in order to survive, so he's all same selfish and cruel as his brother Jang Han Seok. But since he has chosen to change his way in the end, his death wasn't as brutal as the others in Babel which I think is already a blessing for him. Think of it, he 'somewhat' died for a cause which is saving someone and then the others were like tortured to death which Jang Han Seok, Choi Myung Hee and Han Seung Hyuk all deserved. So I'm already satisfied with the ending of Jang Han Seo.