Anastomosis

Anastomosis is what occurs when an OTF does not have a proper emotional bond with their Dragon Pilot or the person otherwise controlling them. They become highly volatile, violent, and will begin to contract their stomach and digest their pilot.

In episode 9, Masotan and Norma both fall under a state of anastomosis as Amakasu and Hoshino begin to fall in love. No longer receiving the full extent of their attention and emotional attachment, Masotan and Norma became extremely agitated, and forcefully regurgitated their pilots.