kallen and suzaku fight each other with all of their might, during the fight Kallen will ask suzaku a question about his aim, he will start to say some hints, but she will laugh at him, after some time Kallen gets the upper hand, so suzaku will be desperate and reveals to her the ZR to stop her, she gets angry, she beats him and storms her way to lelouch, she have to leave her Gurren since it is too big to enter the hall where lelouch is in.
lelouch faces Nunnely, he congratulates her about being able to see and move again, she reply by that she will do anything to stop him, he gets emotional saying that everything was made for her, for her he fought all these battles, then she says that nothing was for her, she didnt want any of this blood shed, and she starts to bad mouth him (because of his geass which enslaves people, and because he killed Euphy, ...etc), then he gets serious, he will either slap her or take the Fleya trigger by force (he wont use geass on her)
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*from there is 2 directions*
ending A:
kallen arrives on the scene, and start asking lelouch "why?", he will start explaining the aim of ZR, she interrupts his speech, asking again "why didnt you tell me?", he keeps silent,
ending A1:
suzaku arrives, lelouch tells him to take Nunnely and Kallen and escape since he will start broadcasting as zero and destroy the Damocles by launching the fleya, kallen understands his feeling so she says her gum line.
Nunnely gets highly emotional but suzaku drags her, the three of them leave the place.
lelouch gets some flash backs about his life (contains one about Charles) feeling satisfied by his life and its end result, the broadcast begins, zero appears and give a speech then blow the whole thing, every one in the BK starts to understand what he really wanted, they feel bad about their betrayal.
in the end scene we see lelouch with C.C, she was able to reach him before the broadcast, she made him to record one instead doing a live one, both of them escaped, and they end together.
ending A2:
suzaku and C.C enter the hall, they will start talking with Kallen, telling her that lelouch keeps what he loves away from him.
all of them reach an understanding, lelouch makes the last record of zero, he destroys the Damocles, he uses the geasses Schnizel to make Nunnely become the ruler of brittania, suzaku becomes her knight, and they return to brittania, kallen stays with lelouch, they live together in secrecy, lelouch has some flashbacks, and becomes satisfied with his life and with this new world (charls appear in these flash backs) and in the end of episode C.C comments about how great it is to be human, giving some conclusion lines.
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ending B:
kallen arrives and she shoots lelouch, lelouch takes the bullet willingly and smiles, he thanks her, Nunnely starts crying holding him telling him to not leave her. suzaku arrives after the shot, lelouch give him the Fleya trigger and tells him to proceed with ZR plan.
kallen finally understand lelouch and asks him "why?", then she speaks her gum line.
*this ending has to derivatives*
ending B1:
lelouch tells suzaku to take Nunnely and kallen away, after their departure C.C runs to lelouch, she confess her love to him, she holds him and kiss him, both of them enter the world of C, where he have a talk with Charles and C.C, he takes Charles code, so he and C.C return to the real world together, then leave together.
ending B2
C.C runs to lelouch's side, and kiss him, his mind start reacting to her, they communicate with each other in the same way they communicated when C.C gave him the geass first time, she thanks him for making her feel human again, then she gives her code to him.
he returns to the real world, C.C dies, he becomes immortal, he orders every one to leave, he completes the ZR, then disappears.