第 12 集: 燦聽到代代相傳的歌曲後，恢復了身為梅莉母親的記憶。
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)
集數
- 第 8 集 · 牧瀨紅莉棲重建電話微波爐，將岡部倫太郎送回原來的世界線。
- 第 9 集 · 鈴原倫太郎回到β世界線，風吹由季保留α世界線記憶
- 第 10 集 · Maho 僱用 Moeka 在訪問 Akihabara 之前重啟 Amadeus
- 第 11 集 · 倫太郎警告真由理關於時間機器的危險，同時在人質事件中筆記型電腦遭到毀壞。
- 第 12 集 · 燦聽到代代相傳的歌曲後，恢復了身為梅莉母親的記憶。
- 第 13 集 · 燐華的過去與廢棄設施的謎團
- 第 14 集 · 認清彈性極限：是徵兆還是承認
- 第 15 集 · 麻帆協助達魯向由紀告白，而蘇露哈則回顧自己的過去。
- 第 16 集 · 鈴原倫太郎在面對達魯和真由理關於時間跳躍機器的質疑時，為留學問題而苦惱。