it was an awesome 6th episode of Angel Beats! ... much much more story development and a rather exciting / moving episode.

The SSS members are released from their detention room and Yuri knows that a serious problem is now posed onto them. It was the first time for them to get sent to the detention room and Yuri sees Naoi as an NPC who was previously under check by Tenshi and thus have not taken much action to them. Yuri then decides to experiment with the NPCs and asks the rest to attend classes but not get in the way of the other ordinary students. She passes Otonashi her communicator and wonders what action Naoi would take if they all do not behave as how they should be. So off the SSS members go and "disrupt" the class with Ooyama eating chips in class, TK, Matsushita, Hisako and Fujimaki playing mahjong, Takamatsu doing push-ups without his shirt again, Yui going off to the toilet almost every minute, Noda sleeping on 2 desks and Hinata and Otonashi just chatting around. It didn't take too long to bring Naoi Ayato to come into the class but everyone managed to escape before he's able to detain anyone. Yuri somehow also realises that Naoi is attacking normal students when no one is around. Otonashi then sees Tenshi sitting alone at her own desks and attempts to start a conversation with her and successfully brings her to the cafeteria with him after saying that he'll treat her with Mapo Tofu. The session eating Mapo Tofu did not last long with Mr. Naoi coming by again and detaining the both of them since they were eating during break time. The two of them then gets locked up in a special detaining room and Otonashi is unable to find any way to escape and tries to call Yuri via the communicator. It took some time before Yuri responded and she told Otonashi about what she had found out about Naoi and that he's currently fighting with the other SSS members through using the other students as shields and hostages and that they are falling one by one. She tells Otonashi that Naoi now has the freedom to do whatever he wants in the world after he became the student council president and that by hurting the students, he's keeping the balance of himself in the world to prevent himself from disppearing and Yuri concludes that Naoi isn't an NPC at all. She asks Otonashi to try and get Tenshi to help them and to get to the grounds after he finds her. Otonashi goes and wake Tenshi up and asks her to help save the others. She silently agrees and tries to use Hand Sonic to break the door but was unable to, even the other forms of Hand Sonic didn't have much use since it was meant for self defense, although her 4th form didn't seem to have much destructive power with it looking like a lotus. Otonashi tells her that they could become friends if he had not misunderstood her as the enemy but Tenshi does not think that its a good idea since anyone who was friends with her would be an exemplary student and then disappears. Otonashi gets Tenshi to use Hand Sonic V2 to stab through the gaps of the door since its thinner and then changes it to V4, thus breaking it open and Otonashi grabs her hand and rushes to the school grounds. By the time he reach the location, he sees the other members already taken down in the rain and the floor was all covered with blood. He sees Hinata still struggling and rushes for him. Naoi tells Otonashi that everyone that comes her have led horrible lives and he would help lead them to eternal rest. Naoi then walks to Yuri and grabs her up, telling her that he'll bring her to rest with his skill of hypnotism, with the rest of his followers being hypnotised by him as well and makes Yuri dream of something happy with her seeing her siblings again. Otonashi rushes forward (most probably with Tenshi already helped taking out the people aiming at Otonashi) and pushes Naoi away, shouting at him to not let people disappear by giving them false memories. He then goes and grab Naoi up, telling him that the lives that everyone had lived through were real and that no matter what kind of lives they had lived through, it was still their own lives and the memories are already carved into them. Naoi then sheds light on his life, revealing that he was always the one alone in the dark but when his brother died, his father told him that it was him who had died and he would be the replacement for his brother. With that, Naoi worked hard for the house's superb pottery and everything went well until his father fell sick. However, Otonashi rebukes him that his life was real and the hard work put him was also by him himself and that he should acknowledge his own existence as well.

the whole part of Otonashi trying to get Naoi back to his senses was great, the words he spoke was meaningful and fitting too with the BGM. and with this episode, Tenshi seems to have a much higher chance of joining the SSS, perhaps after seeing that she had rescued the rest but now is there really an enemy whom they really need to fight? it does seem that anyone who comes into this world are all feeling unfair about their lives and sort of "can't rest in peace" and that when they finally accept their own lives, they will disappear... it was a serious episode, loved the back climax :)