dawn this eps took big leap with romance progress, arata acknowlegde ouka passion very well. futher it nice too see minami taking some big steps too.

I am saying it again. Ouka is the best girl since she is taking similar route as Nino Nakano. Hope she ends up with him.

I know it's late to mention this since we are already at episode 11 but for some reason I still can't skip The Shiunji Family Children intro. Banri and this scene is the main culprit for this problem. Help!

ton of great ouka frames
this is going to be something like, "one of us was moms real child" or "we all loved arata"

I do not think that one of them is the an actual child since the father said they are all adopted and he will be honest in future.
My suggestion is that it's rather a hint that "among us no one will become Aratas wife" or that "among us only one will be part of Aratas life" (or something like that).
At the ending of episode 5 we saw an older arata with his wife and child (which is named after the monther). He or she was writing a letter to his or her siblings (or maybe it's rather a rethorical letter) which implies that the family might break apart and they are not having any contact anymore. Since the author does not know where the siblings are, what they are doing, who they are in love with, but he hopes that they are doing well...