I really don't mind the girl tho. I mean she likes him and she can't really avoid it. She didn't know jun and ji hwanie's relationship so she's not trying to do thing that could harm their relationship purposely
What I'm more worried about is Yul's father. Such an asshole. Leaving your kid then years later you'll pretend to be a loving parent, is more on worried than thankful to Jun and Ji hwanie and toooo selfish to think how could this impact Yul as a kid. That's a child, don't even make a move that would be too complicated for him to understand. You only wanted to be a good father for everyone's eyes, not to Yul :|
I actually pity the brother. From some fragments of his memories, I assume that he was manipulated by his mother at a young age. The phrases that keeps bugging him such as "you're little brother is laughing at you" probably came from her. His false image of how evil the mc's father is(forgot their names am sorry) was fabricated. He was messed up because of his mother. I don't think he necessarily hated his borther just because so, it is the product of his mother's manipulation. I actually wish they help him.
The safe word is santa clous.... If I'm the in the same situation and I'm the dominant, I'll probably end up laughing every time I will hear the safe word
thats what makes it a great safeword kills the mood