With Naoi in Angel's place as student leader, Kuri tells Afterlife Battlefront members to do whatever strikes their fancies in classes and see what happens. Among the results, Otonashi finds himself locked in solitary confinement with Angel for a rule infringement (taking her to lunch during a break between classes); but, Naoi isn't a soulless NPC as others first thought, and by incarcerating Angel, he can unleash a fascist reign of terror on the students unchecked. In the meantime, Otonashi discovers what seems to have deadened Angel emotionally.
—statmanjeff