Just caught up to this so while this was mentioned a while back already, I too, upon the reveal of the twins, immediately thought of incest. I mean that's just how it is ain't it XD. Would like to see Mei play cupid to that.
As for the recent chapter, fucking lol. That I have to say is just so obviously forced. That kind of thing is usually comedy. Being used as a catalyst for poly just seems real weak. But I do like poly tho so I can appreciate the direction it's going just not the way it started. Maybe, and very likely, Mei being cupid to her two friends and then falling for both of them would make it entertaining.