Ruka really is a living third wheel. When Risa expressed happiness at being able to catch him alone, you could just tell that she'd summoned Ruka.
Those who said it were right: Risa really does deserve better than Sugita. The thing is, I'm getting increasingly sick of Ruka. I really hate when authors push patently inferior girls as if to beat you over the head with the idea that such girls can beat out prettier, more charming girls.
Well, if it keeps going in this direction, I hope Sugita enjoys being Number 2. I just hope those two don't get much spotlight time.