Nice. Yeah its believable enough. No worries on that front. Two mature adults who have had a long relationship and still have feelings for one another. It is a much more common situation than many might think.

I'll be honest, you seem a lot more comfortable with this material than the K-ON story you're currently writing. You seem more in tune with the characters voices. The writing flowed noticeably well. Of course, with K-ON you are purposely making them slightly OOC for plots sake so... never mind.

Another thing I enjoyed was Yukari and Miyuki's interaction. Again realistic. She's angry because her mother betrayed her father, but she is also mature enough to understand where her mother was coming from. And she's obviously borne witness to her mother being neglected by her father throughout her entire lifetime. She obviously cares for them both and it's a difficult position to be put into.

Those were some impressive chops my friend. Well done.

This took an interesting turn.

That was a bold move, solving their drama by simply having them talk. Normally, writers trash the idea saying that there'd be no story if all that drama wasn't there. But so few of them ask the question of, if they /did/ talk it out, what happens next?

You, my friend, have made me significantly more interested in this story than I already was. Congratulations.

Other Observations:
Miyuki seems to think there's some sort of moral high ground to be had in a scenario such as this. With the current state of affairs (heh) the way they are, all involved parties are ambiguous at best.
No Tadao in this chapter. Will we get anything involving him some time soon?

Holy crap your back! Nice to see a new chapter. Good chapter. Keep up the good work!

(Yeah, you kind of did make them too forgiving of each other. Personally, I would have gone a different route to keep the tension in the air a bit longer. I wonder if you'll do a scene showing if Konata noticed anything about her dad.)

AAAAAAAH wingsofseyfert, this is getting so goooooood!

So much potential for drama...I'm reading a potential gold mine here. Please keep this one going!

Well... it was awkward... the first part was, at least.
I was not surprised in the slightest that there was Hiiragi-cest. I knew at some point that'd happen in one way or another.
I can't really make much comment on anything else. I can see a lot of possible routes this fic could take and, honestly, there's gonna be drama in every one of them. I just hope it doesn't end in anything too nasty.

Nice to see a new chapter. Keep up the good work.

Chapter three.
I don't know about realistic but...
Once again, the character's thoughts are the highlights to this chapter. I don't know why but I couldn't help laughing at Miki's argument with herself. Come to think of it, Miki seems to have Tsundere qualities to her as well hahaha

So I just finished this and chapter one.
Gotta say, the not-so-happy couple is really lacking in the communication department.
On one hand, Tadao cannot, for the life of him, understand why Miki's always been upset recently despite his attempts to cheer her up. On the other hand, Miki is very angry at Tadao since he has no time for her and apparently he no longer finds her attractive.
In both their respective chapters we see that neither of them is doing the thing with the talking right. Miki, Tadao still thinks you're beautiful - he'd have to be blind not to think that. Tadao, freakin tell your wife you still think she's beautiful. Make up. Have sex. Problem solved!
But then there would be no story... Well, we can't have that, now can we!?
I await your next chapter

And so the axe begins to fall. Thumbs up.

Oh man, wingsofseyfert...this is hot. MOAR is all I can say.

Next they go to Yukari's home and the all 4 of them have an orgey. Then the twins, Miyuki and konata join them and lived happily ever after lolol

So far this story is pretty has an interesting concept and is very well written.I'm glad you showed Miki's point of view on the situation too instead of just making one parent look like the bad guy.

Hit you up?
Nah, I'm good.
Non gay guy here.
Amazing chapter though.

Interesting story. I'm usually not into these types of stories. But since this is so well written, I'll make an exception for this one. Keep up the good work!