Ep. 17: Mayuri dan Suzuha mencoba melompat waktu sementara Rintaro menghadapi kebocoran data dan tentara bersenjata.

Mayuri asks Suzuha to tell her everything she knows about the future and what Rintaro has been through, learning that Suzuha plans to travel back to the past later that day. Wishing to see Kyouma Hououin again despite her romantic feelings for Rintaro, Mayuri decides to go with Suzuha to the past in order to convince the Rintaro of the past not to give up on saving Kurisu. At that moment, however, Rintaro learns from Maho that someone has managed to access Kurisu's knowledge of time machines from Amadeus' data. Rintaro tries but fails to convince Suzuha and Mayuri not to travel back to the past. As Suzuha heads for the time machine, she receives a D-mail from Daru in 2025, telling her that her actions have changed the worldline, and gives her the details of "Operation Arclight". At that moment, armed soldiers arrive to to seize the time machine. Suzuha battles the soldiers to give Mayuri a chance to escape, but she is shot in the crossfire. (Source: Wikipedia)
Episode
- Ep. 13 · Masa Lalu Kagari dan Misteri Fasilitas yang Ditinggalkan
- Ep. 14 · Mengenali Batas Elastis: Sebuah Tanda atau Pengakuan
- Ep. 15 · Maho membantu Daru mengungkapkan perasaannya kepada Yuki sementara Suzuha merenungkan masa lalunya.
- Ep. 16 · Rintaro berjuang menghadapi studi di luar negeri sambil menghadapi Daru dan Maho terkait Mesin Time Leap.
- Ep. 17 · Mayuri dan Suzuha mencoba melompat waktu sementara Rintaro menghadapi kebocoran data dan tentara bersenjata.
- Ep. 18 · Seorang penjahat dari masa depan mengganggu mesin waktu dengan rencana licik
- Ep. 19 · Okabe mengandalkan teman dan harapan untuk menghentikan perang dan bencana di arc Time-leap Machine
- Ep. 20 · Rintaro terbangun di Akihabara tahun 2036 dan mengetahui tentang lompatan waktu Daru serta jendela penyelamatan Mayuri yang terlewat.
- Ep. 21 · Renaissance Pembentukan Gambar: Phoenix Kembali ke Masa Lalu