sentences:  Rei meets up with Mirai who laughs and taunts about how she will have Rei all to herself as all her friends are dead, however she does this for too long and Sen stabs Mirai from behind, killing her, getting revenge on Mirai for what she did a year earlier.The demons still keep the rule that only one of them can escape however, and Sen attacks Rei since Rei was technically responsible for her mother's death due to Mirai pulling them into Purgatory, however Rei wins the fight and kills Sen in self defence.As Rei wallows in despair she creates a large amount of Idea, and deciding to upset Rei even more the demon twins reveal that they had been manipulating the girls all along, and that they were responsible for all the revenents they had fought, and had even murdered Rei's dog (rather than Thelema dying of natural causes) just to create Idea through despair.