The school that we saw Risu attend is a place where Caiman also attended. At the very least it feels clear that he is a sorcerer. It still feels more than likely Caiman was a member of the Crosseyes, but why did his marks disappear? Did those cross-eyes suppress these memories? Then you also have the deal of Risu’s magic. Caiman potentially killing Risu could be why he is how he is. There are still questions left between Risu & Caiman.
Though, as we see a mention from the professor, the Wax Man leads the CrossEyes. In which could Caiman have been that guy? The coffin is missing, so it would make sense if he was revived. Though it doesn’t explain why Nikaidou found Caiman in the state he was in, being headless.
We see Asu transform back from a devil to a sorcerer. Though even if he doesn’t die, for him to get back to the land of sorcerers feels like a mission impossible. Still, Asu’s name was Kawajiri and he acted like Nikaidou’s brother. It makes sense that he helped her as much as he could. What exactly did Nikaidou do that affected Yakumo?
Stuff from all over is a mess. With Asu no longer a devil, Chouta’s disguise is broken, and did he null the contract between En and Nikaidou? No surprise, with the state that Caiman is in, that he leaves Niakidou without a mention to her. Well, it is not the first time he did that.