Wow, even for this manga this arc is just plain shit. Easily one of the most overused troupes in drama+romance. Fuck it, I don't even care if she marries the guy. Case and point, ironically in the first 13 chapters of this manga itself someone already tried to forcefully marry Yuuna. I get it's just a rom-com ecchi but my goodness, how unoriginal can this author be if already did an arc just like this in the same manga.
A lesbian tyrannosaurus rex coming back as a ghost trying to woo Yuuna would have been better than this. Hah, I'm hoping it's at least a set-up for an overreaching arc. Like it's the prelude to a war between the 3 major families.