Norio got us too used to only giving us Kyo x Anna and here are the consequences. If there's one thing this story does very well it's focus on its main characters, it does it very well but it feels out of place when it gives prominence to other characters, it's not that kind of series.
I don't deny that it worries me, I don't want this series to drag on just for sales, this arc felt.... Boring. I think Norio's intention was to show a realistic perspective of other relationships/people and he did it well, I like the focus on momo but I feel it dragged on too long and in the end I didn't understand Kyo's role in all this and why he was SO INVOLVED, this story always builds things up ahead of time so I was expecting something much more impactful although I don't deny that from the beginning I didn't see fruit to this.
I think there are much more interesting things to deal with, like Anna's career in depth and her feelings about it, their long secret relationship and their future together. The best certainly was the comedy, it's pretty good but it's sad not to see the main couple interact, that's what always mattered anyway.