
Jin Yao already have the parents approval and blessing. Nice
Jin Yao is probably one of the ideal seme in the entire shounen ai / yaoi world and his character development from the start to now is superb. It doesn't feel force unlike the other stories. And don't you guys love it that he is giving Yiyi's time to figure out his own feelings. In the world of yaoi where the seme would usually force their way in to the uke, be like Jin Yao.
Haejoon, you might lost your blood related family but trust me that you still have a family. He is called Eunyung by the way. He might not show you that he cares but he does care for you a lot. He didn't even doubt you even after reading that article. He knew that you ain't capable of those shit. The start might not bet a good one but he treats you as a family now. He might not admit that tho.