And we have a certain lack of Beel and Oga... well, I guess its time to let Aoi shine. After all, I doubt she's gone through enough training to take on someone like Behemoth (dammit, we need to cut back to that fight next chapter!), but these so-called Pillars... should be a good test for her.
and naturally, they're probably going to leave Behemoth for Oga and Beel later on... you know, I can almost see some sort of weird fight between Furuichi and En for Lamia. No, I don't know how that would precisely work, but I can see En challenging Furichi to a battle this arc