Ended up doing this much later than planned, sorry about that.
Things are reaching the point where even though I can follow the main points of the episodes I know I am missing some key things as well that is in the dialogue. Hopefully the subs will be able to catch up soon, though I am happy to see they have completed episode 5 now, which should be a big help in figuring out Yanai's character more at least.
And that is where things end for this episode. The preview shows that it looks like we are going to find out more about Origuchi and Narumi's relationship and that is about all I could glean as it seems to be making sure that nothing major is given away. With only two episodes left in the series I can understand that as we are hitting the final stretch so things should finally all start falling into place.
Not sure how much I care for the secret older brother plot here, but I guess it does work considering that Narumi does not seem like the type to talk about himself much at all to anyone. I think it is going to depend how it plays out. Though it does seem like it is going to work well as the way to bring the two main plots of the drama together for the ending.