Even though Karina's dying that mf is thinking about the other girl? Damn it! How selfish he can be. No hurt feelings to Karina's sister but this makes my blood boils!!! ヽ(`Д´)ノ
I think something in the past panels with the family made him changed his mindset towards Heeseo and the old lady. At the end he's not longer her adoptive son. So that's my theory to make myself understand this mess.
Even though Karina's dying that mf is thinking about the other girl? Damn it! How selfish he can be. No hurt feelings to Karina's sister but this makes my blood boils!!! ヽ(`Д´)ノ