Okabe and Kurisu tell each other about their romantic feelings for one another, after which Kurisu tells Okabe to save Mayuri. Daru hacks into SERN's database, and they delete the record of the D-mail, returning them to the original timeline. Later, Suzuha Amane, Daru's future daughter, arrives in a time machine to tell Okabe that the only way to prevent a time-travel arms race leading to World War III is to prevent Kurisu's father Nakabachi from killing her and stealing her time travel theories. Suzuha and Okabe travel back in time, but Okabe accidentally kills Kurisu himself. Returning to the present, Okabe receives a message from his future self telling him that to escape the current timeline, he needs to save Kurisu while recreating the vision of the dead Kurisu that his past self saw. Traveling back in time again, he provokes Nakabachi into stabbing him, knocks Kurisu unconscious, and puts her in his pool of blood for his past self to see, causing the timeline to diverge into one where Kurisu lives and World War III does not occur.