Ep. 19: Okabe menghadapi Moeka mengenai bunuh dirinya dan FB misterius setelah upaya D-Mail gagal.

As Kurisu offers to look after Mayuri at a doujin convention, Okabe heads to Moeka's apartment, only to learn that she committed suicide. Okabe leaps to time before Moeka killed herself, finding her a nervous wreck due to not having been contacted by a person she calls "FB," who had given her the orders to find the IBN. Okabe steals Moeka's phone and sends a D-Mail from it, but the timeline does not shift, leading him to realize that she had lied about the contents of the message she had sent in the previous world line. He then confronts Moeka about FB and tells her about her future suicide. Okabe finds the offending text, which involved the location of the IBN 5100, but annuling it via another D-Mail still does not change the world line. As Okabe decides he needs to send a D-Mail from FB's phone, Moeka, feeling betrayed, tells him the location of the IBN 5100. (Source: Wikipedia)
Episode
- Ep. 15 · Suzuha menjelaskan kebangkitan SERN dan Okabe memperbaiki mesin waktu yang rusak untuk menemukan ayahnya.
- Ep. 16 · Okabe mengubah garis waktu untuk menyelamatkan Suzuha, mengubah takdir Mayuri dan pembacaan divergensi.
- Ep. 17 · Okabe dan Kurisu mencoba membalikkan D-Mail Faris untuk mendapatkan IBN 5100.
- Ep. 18 · Okabe dan Ruka menjalani kencan yang canggung sambil membalikkan D-Mail untuk mengubah takdir.
- Ep. 19 · Okabe menghadapi Moeka mengenai bunuh dirinya dan FB misterius setelah upaya D-Mail gagal.
- Ep. 20 · Okabe dan Moeka melacak IBN 5100 ke Prancis sambil menghadapi Tn. Braun yang mengungkapkan identitasnya sebagai FB.
- Ep. 21 · Okabe mencoba menyelamatkan Mayuri tanpa menyebabkan kematian Kurisu di garis dunia Beta
- Ep. 22 · Kurisu mengingat mimpi menusuk dan Okabe memilih Mayuri sebelum beralih ke garis waktu Beta
- Ep. 23 · Suzuha membimbing Okabe untuk mencegah kematian Kurisu di garis dunia bebas Perang Dunia III.