So that bit*h knew(╯°Д °)╯╧╧

I'm not surprised tbh, no way he wouldn't have known. His son has a major victim complex and didn't see what he was making Sejoon do, as wrong. So he definitely would have let it slip or directly told his father, since his Dad dotes on him, making him feel like he can never do wrong. And let's not forget, his hand in the accident. He could have warned his brother that he let the "night blindness" thing slip and to be careful
┑(￣Д ￣)┍ The guy deserves to rot in prison