While struggling to make friends after his parents’ divorce, Koyomi Takasaki meets Kazune Takigawa, but apparently, they already have. Kazune reveals that she’s from World Line 85, an alternate universe in which she and Koyomi are lovers. But in a reality where moving between dimensions is natural, could Koyomi be the one from another world?
| Actor | Role |
|---|---|
 Hio MiyazawaKoyomi Takasaki (voice) | Koyomi Takasaki (voice) |
 Ai HashimotoKazune Takigawa (voice) | Kazune Takigawa (voice) |
 Kimiko YoKazune Takigawa (old woman) (voice) | Kazune Takigawa (old woman) (voice) |
 Maki MizunoItoko Satou (voice) | Itoko Satou (voice) |
 Tokuma NishiokaKoyomi Takasaki (old man) (voice) | Koyomi Takasaki (old man) (voice) |