[Henry chuckles, shifting his arm around Jack again to lay on him a bit more lazily.]

I told Ryou how I felt. How... strangely, he had already become very dear to me and it felt like he was my son. I asked him if he wanted to return with us, or -- if not that -- if he would want to be considered my son while we were here. He has all the time he needs to think on the former... but on the latter, he agreed.

[His voice is warm and content, especially once he turns his face to snuggle a little in Jack's hair.]

It's not much more complicated than that. But don't worry, Jack... I'd never replace you.