I thought the same ^^ is there a chapter missing?
The talk at the end of chapter 3 was with the two brothers I think about Yuri going to stay over with Hiromi for a work study. They mentioned this in chapter 2 about how Hiromi wanted Yuri to come work for him for a bit. Yuri decided to do it to prove to himself that Aki-nii would still be there even if he was away. He was probably only gone for a few weeks at most.
and the other question, do the 2 brothers love each other? at least the younger one seem to love the older one in a diff way than brothers or am i wrong?
Am I too sleepy to understand what happened there? What was that talk about in the end of third chapter? Just a random plot to separate the main couple? So the seme would realize his feelings for the uke? And for how long they've been separated? One day? One month? One year? Everything was so... out of the blue~~ where has the development gone? Or at least, where has the explanation gone? Seriously, I must have been tooooooo damnnn sleepy for I didn't realize any of these IMPORTANT details