A series I only know from a MangaUpdates description

[Oobaka-san]

Somehow I suddenly remembered a description I saw years ago on MangaUpdates for a romance, I believe Shoujo though definitely the older end of that, and I found myself wishing I could find it since I'd always wondered just how the author made a story out of such a premise. I could've sworn the name was something like "perfect strangers" or "perfect couple" or had at least one of the three words, though I didn't find anything typing those in on MU. The premise is very simple and kind of dumb: there is a guy and girl who don't really know each other or get along. One day they end up in the broadcasting room for reasons I can't remember, and somehow wind up going from nothing in common to getting it on, only they don't realize they accidentally turned on the mic and the whole school heard them from start to finish. And apparently that's how the story STARTS, I assume with them afterward dealing with the backlash of everyone hearing them doing it.

No clue why series I briefly saw or heard about pop in my head, but if I can't get the name of something once it pops in it can bug me forever.