Byul doesn't know any better, and he regrets what he said immediately. He didn't know the details about what happened. I'm more concerned with what kind of excuse Dojin will come up with to Hyesung about why he's been supporting her other than sense of responsibility. I do hope this problem will be resolved with a good communication and validating Hyesung's feelings. He's the one who has the most right to feel what he felt. But saying Byul doesn't have empathy or anything is false as well. That's because he has so much empathy, he can feel that way to both his mom and grandmother at the same time, tho he definitely has to know more context to understand why he shouldn't force the reconciliation between his mother and grandmother (if he ever thought to do it). Hyesung is the only one who has the right to have a say about it.
Byul doesn't know any better, and he regrets what he said immediately. He didn't know the details about what happened. I'm more concerned with what kind of excuse Dojin will come up with to Hyesung about why he's been supporting her other than sense of responsibility. I do hope this problem will be resolved with a good communication and validating Hyesung's feelings. He's the one who has the most right to feel what he felt. But saying Byul doesn't have empathy or anything is false as well. That's because he has so much empathy, he can feel that way to both his mom and grandmother at the same time, tho he definitely has to know more context to understand why he shouldn't force the reconciliation between his mother and grandmother (if he ever thought to do it). Hyesung is the only one who has the right to have a say about it.