Nanmu wanted a family; it's his long-cherished dream. He only ever saw Pil-Gyun as his son until recently, when he went beyond that. Afterwards; since it had been a long time since, added with Pil-Gyun's persistence and his changed viewpoint of him, I think it gradually changed into something else. I guess it still extends to his treatment of Pil-Gyun until now; being soft on him, being lenient towards him, being father-like towards him.
It's Pil Gyun that's insistent on calling him "Dad". Nanmu even told him to stop calling him "Dad" at the start, but he refused. I tried understanding Pil-Gyun's reasoning, and reason he gave, albeit a twisted one, in the form of a flashback from his youth.
To a young boy who never had a "Dad", this man was the only one he ever had who he'd ever acknowledge as his father. Even when his mom introduced other guys to him, he is an irreplacable existence. If Pil-Gyun filled into Nanmu's heart with his role of a "son", Nanmu fills into Pil-Gyun's heart with his role of a "father". This bond transcends beyond that of anything else.
So the next question is why Pil-Gyun would want to keep this bond between them, while going further than what is normally appropriate.
I guess he's someone who wants Nanmu to fill both roles and won't compromise one or the other.
I should think that it'd be likelier to want to disregard certain titles in favor of a new one, in order to make their relationship seem more legitimate; but I guess they'd already done away with that they met again in the beginning of the story. For him, he's willing to do unspeakable things, cross lines, and break taboo.
Considering that they're living lawless lives, I think they just decided to take one step above that at this point. I mean, there was also the relationship Nanmu had with his "brothers". That, too, had a twisted logic: To alleviate Nanmu's punishment, they too had to partake of it - and to do so, they had to be the ones to punish him as well. All this... to marry a woman and legitimize their relationship; only for it to not work out.
Nanmu wanted a family; it's his long-cherished dream. He only ever saw Pil-Gyun as his son until recently, when he went beyond that. Afterwards; since it had been a long time since, added with Pil-Gyun's persistence and his changed viewpoint of him, I think it gradually changed into something else. I guess it still extends to his treatment of Pil-Gyun until now; being soft on him, being lenient towards him, being father-like towards him.
It's Pil Gyun that's insistent on calling him "Dad". Nanmu even told him to stop calling him "Dad" at the start, but he refused. I tried understanding Pil-Gyun's reasoning, and reason he gave, albeit a twisted one, in the form of a flashback from his youth.
To a young boy who never had a "Dad", this man was the only one he ever had who he'd ever acknowledge as his father. Even when his mom introduced other guys to him, he is an irreplacable existence. If Pil-Gyun filled into Nanmu's heart with his role of a "son", Nanmu fills into Pil-Gyun's heart with his role of a "father". This bond transcends beyond that of anything else.
So the next question is why Pil-Gyun would want to keep this bond between them, while going further than what is normally appropriate.
I guess he's someone who wants Nanmu to fill both roles and won't compromise one or the other.
I should think that it'd be likelier to want to disregard certain titles in favor of a new one, in order to make their relationship seem more legitimate; but I guess they'd already done away with that they met again in the beginning of the story. For him, he's willing to do unspeakable things, cross lines, and break taboo.
Considering that they're living lawless lives,
I think they just decided to take one step above that at this point. I mean, there was also the relationship Nanmu had with his "brothers". That, too, had a twisted logic: To alleviate Nanmu's punishment, they too had to partake of it - and to do so, they had to be the ones to punish him as well. All this... to marry a woman and legitimize their relationship; only for it to not work out.