Ep. 12: Kagari mengingat kembali ingatannya sebagai ibu Mayuri setelah mendengar lagu yang diwariskan secara berulang.

Kagari collapses again after hearing Mayuri singing a song, which Rintaro believes may be a hint to regaining her memories. He finds that Mayuri had learned the song from Suzuha, who herself had learned it from Yuki in the future. Yuki then reveals she had learned the song from Rintaro's mother, who claims he was the one who sang it to her back when he first started his mad scientist phase. While visiting Mayuri's grandmother's grave for any clues, Kagari goes into a daze upon hearing a song on the radio and almost gets hit by a truck, after which she regains her memories of Mayuri being her mother. It is then revealed that Rintaro had learned the song from Kagari herself years ago, when a mysterious organization spotted her. (Source: Wikipedia)
Episode
- Ep. 8 · Kurisu membangun kembali Phone Microwave untuk mengirim Rintaro kembali ke world line asalnya.
- Ep. 9 · Rintaro kembali ke garis dunia beta di mana Fubuki mempertahankan memori alpha
- Ep. 10 · Maho Merekrut Moeka untuk Menghidupkan Kembali Amadeus Sebelum Kunjungan ke Akihabara
- Ep. 11 · Rintaro memperingatkan Maho tentang mesin waktu sementara sebuah laptop hancur selama situasi sandera.
- Ep. 12 · Kagari mengingat kembali ingatannya sebagai ibu Mayuri setelah mendengar lagu yang diwariskan secara berulang.
- 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.