In order to continue his work against SERN, Okabe must finally choose between saving Kurisu or Mayuri.

Cast: Mamoru Miyano, Asami Imai, Kana Hanazawa, Tomokazu Seki, Yukari Tamura, Ashly Burch, Cherami Leigh, Trina Nishimura, Tyson Rinehart, J. Michael Tatum