Welp, Yotsuba is a sharp girl, isn't she? I believe at this point the girls are already know that at least four of them is in love with Uesugi, but how did Yotsuba knows that Ichika is trying to disrupt Miku's plan when Miku only asking what is she doing without any suspicion at all? How did she knows that Ichika is misunderstand her advice?
It's just me but I think Negi is like rushing the chapters. I mean, Itsuki suddenly falling in love(?) with Uesugi, Ichika caught red handed in only few chapters, and with Yotsuba became sharp in a flash? Enough my rant, just keep it up Negi.