With Momo making herself more useful in the Yuuki household, Mikan feels like she's not needed there anymore. As she's about to return home from buying groceries, the hot weather makes her faint. Fortunately for Mikan, Rin is there to help her. Rin then invites Mikan to her home to escape the heat. Their conversation drifts to the topic of how Rito can be perverted at times.
Meanwhile, Yui meets Haruna and the latter invites her to hang out at a cosplay cafe where Mio works. Risa is also there, and she talks to Yui and Haruna about the time she went on a date with Rito in that same place (back in Motto To LOVE-Ru) and jokes that Rito "has skills."
Their conversations may be separate, but both Mikan and Yui vouch in a similar way that Rito isn't like the other boys. Sure, he has his accidental pervert moments and can be helpless at times, but he has his good side. For Mikan, Rito is her beloved older brother who looks out for her well-being. And despite being so uptight about it, Yui can't help but fall for Rito a little further.
As for Momo, well...she eavesdropped on Mikan and Rin's conversation and is a bit jealous of the bond that Rito and Mikan share. But she still hopes to become someone special to Rito one day.