It was the Joon guy
He had the knife meaning that he was the one who came back to retrieve it so the police wouldn’t get his fingerprints
When Seungho asked his father to forgive him Joon no longer had a reason to hold onto it and threaten DukGwang’s safety. That’s why he did it. To free him in a way even though he was innocent. Since the knife was apparently the only lead they had and the DG was the last witness
It was the Joon guy
He had the knife meaning that he was the one who came back to retrieve it so the police wouldn’t get his fingerprints
When Seungho asked his father to forgive him Joon no longer had a reason to hold onto it and threaten DukGwang’s safety. That’s why he did it. To free him in a way even though he was innocent. Since the knife was apparently the only lead they had and the DG was the last witness
Hope that helps
So many plot holes,,,
Who killed the guy,, Was it really Dukwang even though he says he only came back to see the body and knife,,,,,, Was it Joon who killed him??? Why did Sungho beg his dad to forgive Joon when he didn't even know about Joon's plan to sabotage??? Did Sungho come to terms with his sexuality??? Did Sungho's mom leave? Take her own life?? Did his dad murder her???
The story overall was good, I also love how the art carries an older style to fit the 80s setting. The ending felt fast-paced. I had this one on the back-burner because the cover made me think this was going to be a weird Young x Older couple. Glad I was wrong.