Apos hat etwas Schmerzhaftes für Rin im Sinn, aber es macht ihm Spaß, die Qualen zu verlängern. Wenn Mimi nicht für immer allein sein will, sollte sie besser ihren Freund finden - und zwar schnell.
Shortly after the end of episode five, Rin wakes up in Eipos' castle at the foot of Yggdrasil, the mythical tree that generates time spores, since Eipos let her regenerate instead of consuming her spore. She is then locked in a room with a masked angel and kills him, only to discover that it was Ihika. Meanwhile, Mimi and Mishio desperately search for Rin and learn the location of Eipos' castle from the informant. Tajimamori, former Guardian of Yggdrasil, invites them to his castle, explains that his son Eipos aims to become the new eternal Guardian, and opens a portal to Eipos' castle for them. There, Rin is losing the battle against Laura but Eipos double-crosses her and Rin escapes. In retaliation, Laura teams up with Mimi and Mishio and leads them to Yggdrasil. Rin is already there and meets Tajimamori, her millenia-old love. They have sex until Eipos arrives, kills his father, and pushes Rin into Yggdrasil. Mishio tries pulling Rin out and fails but Rin manages to grab Kōki's time spore (that Rin found in the sea after episode four and Mishio unwittingly brought to the castle) from her necklace. As Yggdrasil tries to merge with her, Rin consumes Kōki's spore and his spirit helps her to break free. Mishio, revealed to be Tajimamori's descendant like all Maenos, pulls Rin out and back to the castle. Eipos attacks them but Rin, now the new Guardian of Yggdrasil, pushes Eipos into it himself. Before he is consumed, she feeds Tajimamori and Laura's spores to him.
In the epilogue, Rin gives birth to Tajimamori's son and continues living in Eipos' castle with Mimi and Mishio. Her closing narration reveals that their son is linked to the Yggdrasil and this link will spread throughout mankind with his descendants.
エイポスと共に姿を消した燐。一縷の望みにかけて燐を必死に探すミミと美汐。
一方、世界は不死にまつわる噂や事件で、混乱の様子を見せはじめる。
世界が徐々に壊れはじめようとしているその時に、純白のウェディングドレスを着た燐は、見知らぬ古城の中で目を覚ます。
城の中をさまよい歩く燐は、不死者でありながら死んでしまっている女たちを目の当たりにする。
そしてもやのかかる城外の広場に行き着いた燐の元に、天使の群れが舞い降りる！
Апос задумал для Рин нечто болезненное, но ему нравится продлевать агонию. Если Мими не хочет остаться одна навсегда, ей лучше найти своего парня - и побыстрее.
Esta vez les toca a Mimi y a Mishio ser las protagonistas y para ello deben darse prisa para localizar lo antes posible la ubicación del castillo de Apos porque están convencidas de que es el lugar al que se ha llevado a Rin. La última parte de su estudiado plan para implantar un nuevo orden mundial se pone en marcha; valiéndose de una explosión provocada en un reactor nuclear ruso, Apos consigue revelar a los humanos la existencia de las inmortales.
