When Nibutani is involved in something, you know that Dekomori will ruin it since she called her a “fake” Mori Summer. Oh yeah, and check Dekomori’s braid… She has a bigger hammer at the end of her hair!
But anyways, Nibutani is going to become a student council president. But will she succeed, or fail at the hands of Rikka’s servant?
On the other hand, it seems that “Sophia” Shichimiya is acquainted with Nibutani during her middle school days. And once more, she has proof that Nibutani really is the Mori Summer. Which means…
…Dekomori becomes her servant with respect for all eternity. Oh god, the world is ending and now I’m in mourning!
Then again, it won’t last long though. Anyways, looks like it’s back to normal at the end of this episode. Sorry Nibutani, but your dreams of becoming a president is over!
The Anime Rambler - By Benigmatica 
” Sorry Nibutani, but your dreams of becoming a president is over!”
My fear is that the very blunt use of the reset button means that Kyoani is not going to allow any character development this season.