I'm with the TL note on this one: this makes 0 sense ... if Yukana really did tought that Junichi wanted them to break up, a) why did she ran to him as soon as Yui called? b) why the hell would Junichi want to go there in the first place ? Coundn't he just ... break up with her, without having to pay a ticket and a trip?
But what really irks me is that Junichi resumed to be the idiot lapdog of his girlfriend, even when it is abundantly clear that Junichi has some valid points to resolve with her where her is certainly not in the right. The author clearly departed of the original thought of despicting a somewhat normal relationship between two teenagers ( one of them being a gyaru and the other a hikikomori candidate ) and resumed the oh so familiar tale of a "loser" guy ( that, in spite of being a "loser", is orbited by a solar system worth of girls and traps for some unknown reason ) that is oh so lucky to nail a beautiful and desirable girl ( that, *for some reason*, almost no man wants anything with and even the token lesbian road bump having some second thoughts on the whole thing ) and that, because of that, treats her like a goddess that is
never in the wrong ... even when she acts like a douche. Sigh.