Episode 12 -
Warning: Spoiler!Himeko seems surprised that she has struck Chikane and drops her bloodied sword. She cries as Chikane collapses against her and both fall to the floor. Himeko picks up the sword and puts it to her own throat, intending to kill herself, but Chikane stops her. Chikane instead shows Himeko a vision of their past lives where Chikane had to kill her in order to defeat the Orochi and save the Earth. In that life Himeko was the sacrifice, in this one Chikane wanted to be sacrificed instead.
Chikane explains how in this lifetime she needed Himeko to hate her enough to kill her and now that she has, the world can return to normal and Chikane's own existence will be wiped from their memories. Chikane gives back the hair clip to Himeko that Soma had given to her as a gift and tells her to be happy. She closes her eyes to die, but Himeko won’t let her and asks for “the truth” again. Himeko wants to know if Chikane lied when she said she loved her and Chikane says that she did love her, but it was a “different” kind of love and she didn't want to burden Himeko with her true feelings. Himeko now says that she loves Chikane too – the same kind of love she feels for Soma.
Chikane tries to convince her otherwise, saying that such a love is wrong and that she's unworthy of it anyway, but Himeko kisses her, tearfully saying that she never meant to hurt her. Himeko wants to go with Chikane now and says that she wants to “warm the moon with my light”. She kisses Chikane again and wishes her a “happy birthday” now causing Chikane to cry as well. Himeko tells Chikane that she is in love with her and won't be ashamed of it.
Ame no Murakumo has defeated Orochi and Orochi flies to the moon. The girls are now inside Ame no Murakumo and as their marks join and become one, they fly towards the moon as well, but it seems Soma has gotten left behind. He is completely covered in scales now and is visited by Tsubasa’s spirit. Tsubasa taunts Soma, saying that he sacrificed everything for Himeko and that she has chosen Chikane over him. But Soma says that it's enough to know that Himeko is alive and tells Tsubasa that he is the same, since he sacrificed everything for him. Tsubasa takes up his sword and strikes Soma, causing his scales to disappear and telling him that he'll let Soma “be a fool till the end.”
Tsubasa gives his sword to Soma and Soma's mark glows, causing him to scream. His mecha reconstructs and he takes off after Himeko. When he reaches her, he tells her that he wants to help her and save the Earth and the mechas then fuse. They attack what is left of Orochi and finally defeat him completely. Tsubasa asks Soma if he's happy now and tells him “to become strong” so that he “can fight alone and protect what is important” to him. Soma thanks his brother as Tsubasa disappears for the last time.
Chikane and Himeko end up in the world of illusion and Himeko is glad everything is over. She tries to have things as they once were, but suddenly breaks down and cries when she realizes that she can’t stay with Chikane. Chikane says that it's their fate, but Himeko feels that it's unfair and won't let herself “be defeated by fate, eternity, or even God”. She tells Chikane that nothing is stronger than their feelings and makes Chikane promise to never forget her. They kiss one last time as the world of illusion disappears and as Chikane is taken from her, Chikane promises Himeko that she will be reborn. She says that Himeko must look for her and Himeko promises Chikane that she will find her “no matter what”.
Himeko wakes up in the dorm room in a repeat of the scene that started the series with Makoto as her roommate. Himeko sees Soma at school and asks her for a date the next day – her birthday – because he must tell her something. The following day, during their date, he confesses that he likes her and wants “to protect her forever” before asking her to go out with him. Himeko apologizes to him and says that she can’t because she is waiting for someone, although she doesn't know who it is yet. A dejected Soma tells her that he understands and wishes her well. He gets on his bike and leaves as Himeko thanks him for understanding.
Back in her room later, she tells Makoto about Soma and Makoto can't believe that she rejected “the prince” and asks her if the “imaginary person is really that important” to her. Himeko says yes and Makoto teases her, knocking a photo album to the floor. Himeko picks it up and Makoto notes that it only has pictures of Himeko alone. Himeko starts to cry, saying that the pictures make her heart ache and she doesn't understand why. Makoto tries to comfort her but Himeko says that she's fine and that how she feels will never change.
One day, an older Himeko is crossing the street and sees a girl in white with long black hair, wearing a shell necklace. She immediately recognizes her and they fall into each other's arms – “in love once again”.
Either way I really like this show. 
