Izumi actually managed to corner it with hand-to-hand and desk-to-face combat while Kurono was preparing in the bathroom. That thing went out of its shell but I don't know if that's a good thing or not since it looked like it's standing down.
Pirating_Ninja said: Why did he even bother to disguise himself as a human if he was just going to create a path of carnage in the first place? Makes no sense.
Probably so he could infiltrate the school/classroom easier.