I just noticed something, correct me if I'm wrong but from what I can tell female djinn and their subsequent djinn equips will always have some sort of head/forehead ornament while male djinn and male djinn equips will have a 3rd eye on their forehead.
It's just something I noticed while looking at Kouha's djinn equip during this chapter.
P.S. Aladdin is so badass, he's leading all these dungeon conquerors armed with nothing but a tree branch. XD