Responses
I though the same. For so long, he couldn't remember that he had a family and wanted to have one if possible. Now that he remembers and actually has a family, he would likely spend most of his time with them and that would be the best for him.
Personally I hope there is no romance or that Ijin doesn't end up with Yuna bc Yuna's life is just too much, if possible I do want Ijin to have a normal life without all the rich people drama... I'm really glad he is indifferent towards Yuna's family. This not to say that Yuna is a bad person.