Responses

Hyesung's mom left him with his father when he was young and only came back to meet him again after she saw him together with Dojin on the internet and he refused to forgive her or even see her face (which I understand why)
However Byul has been secretly keeping in touch with his grandma (he didn't know what happened) and it seems Dojin also has been doing the same thing without hyesung's knowing (which piss me off because he knows why Hyesung and his mom were estranged)
Bro the betrayal Hyesung must have felt, like I understand why Byul does it. Byul doesn't know what happened between his mom and his grandma BUT DOJIN?! HE KNEW
He knew what happened YET HE STILL CONTACT HYESUNG'S MOM BEHIND HIS BACK