Chisato and Takina have fallen into becoming ''lycoris dolls''. They begin to act under the orders of their master, Itadori. They betray their former comrades and then... The lewd daily lives of these two fallen girls continue...
Seriously, not even a glimpse of Kurumi? I see no reason why she couldn't have been shown when they were going through the brainwashing on everybody else. They even said back at the end of Vol. 2 that they were going to keep her alive because she might be useful, so it feels like blue balls to not get that sweet, brainwashed loli. Obviously she couldn't be a Lycoris Doll, and there was no way she was going to interfere with the core duo of Chisato and Takina, but she could have been broken in the old fashioned way! Disappointed to not see her, as she's clearly best girl.