The fourth volume of the Tasogare Otome × Amnesia manga series covers Chapters 14 to 18.5. Teiichi Niiya returns to school after summer vacation, while Yuuko Kanoe is haunted by a shadow of her own self.
I like you, Yuuko...
Yuuko is tormented by another Yuuko — who comes by the name of "Shadow Yuuko".
Does this spell the end of her days with Teiichi...?