the ending should be the key for this confusisness

I think him having a brother was a lie to keep him trapped but

I think him having a brother was a lie to keep him trapped

Looking at thelast paper woth the genetic report. It seems like his supposed brother hes been trying to protect wasnt even his brother.

The paper indicating that Gokdo isn't his brother, the Top just played Neul and lied to him that he has a brother, until the end Neul disregarded the paternity test and still believe that gokdo is his brother even if it was all a lie become I guess he succumb and give it his all and its too late for him to not care

*because