Calm down people. I don't know if you guys are serious but that last panel alone doesn't mean Maki is falling for Ishigami. Shes just in search of a fellow hopeless romantic and now that prez has ascended, she thinks Ishigami is the only person left like her. Of course this could be the start of a harem as so many of you pointed out. As long as it doesnt ruin his relationship with Tsubame.