Nao's truth

So Nao can't have kids while Hiroto wants a lot of kids, bad right? However, I think they will be able to overcome it somehow.
I like Nao's father, I feel like he's reasonable and can analyze things well, he's not the type of father who would refuse basing on shallow feelings only, I like his judgment so far.
This love story keeps getting more complicated but I am confident that true love will win at the end...As usual.