
It is bugging me what is the connection between Namsoo and Hungoh? Is it love at first sight or something more? I need to know.

I think there was a little hint in one of the most recent chapters posted on here.... :)

SPOILERS:
-Their biological parents were murdered by the creepy lady with a knife. While the lady was trying to get away from the police, she stepped on Hyeongoh's foot, thus the disability.
-The two were together at an orphanage or adoption center, but the couple that took Namsoo wanted him because, I think, he did not have the disability.

Spoiler? Kind of. I don't know if my interpretation is correct.
There's a scene towards the end of the flashback wherein Namsoo's adopted father died from perhaps depression and self-neglect (from the wife dying), and in his hands was a piece of paper. I do not know what it says, but it might have mentioned that Namsoo had a twin and there's where he learned it. Again, not sure. Just what I thought from seeing that in the raws. Or, Namsoo can just "feel" his twin. Later on, you can see that the two do share a close, telepathic connection
I'm really concerned for the uke. I don't think it's going to end well for him. He needs to move in with his friend just to get away from the two psychos.