Considering God is an actual character in this manga, these could genuinely be Youkai. Then again it could also just be the drama club. Who knows with this series to be honest with you, they are both equally as plausible.
Look at that guy, “Ooh~ I have a long stretchy neck, I’m superior to you” let’s see how long it takes for you to get cramps or get caught on a tree, jackass…