Your mom dates a nice guy when you’re like 5 years old and you develop feelings for that same man years later and since your mom is dead. He is officially free game. I can’t imagine how Pilgyun would deal with his feelings if his mom was still alive and wanted to get back with Ryu!
I love the story, don’t get me wrong! I just had that sudden thought cross my mind wondering if Pilgyun would have been more mentally sound if he had gotten extra love he needed from his mom. Just from the little context about her we got, she seemed to have always kept a man until she got sick. But there aren’t any sentimental/happy moments Pilgyun has with his mother in the flashbacks. Poor Pilgyun is love starved. Σ(っ°Д °;)っ