第21話: 海に創世の樹の枝が現れ、アイカは友人たちを守るために自決を選ぶ

A huge branch of the Tree of Genesis appears in the middle of the ocean, which Samon and the others conclude to be the tree's main core. Meanwhile in the past, Aika learns the whole truth from Hakaze and decides that to ensure that the present stay unaltered and her powers are transferred to Megumu, she must commit suicide. Hakaze tries to stop her to prevent Mahiro and Yoshino from suffering, while Aika claims that she intends to kill herself with the sole purpose of protecting them. After a vicious confrontation, Hakaze is defeated and knocked unconscious. Upon awakening, Hakaze rushes to Aika's house just to find her already lifeless body and a letter addressed to her, containing a message that shall be delivered to Mahiro and Yoshino once the Tree of Genesis is destroyed. (Source: Wikipedia)

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