Hiyakawa can't understand what Mikado is feeling. And for his part, while Mikado recognizes how deviant Hiyakawa is, he just can't cut ties with him.
In the middle of all this, Mikado is as good as kidnapped by Sakaki and taken to Erika in a car. Erika asks a bewildered Mikado for help with her homework, as though the situation were quite normal. As Erika works on her homework, she tells Mikado about the mysterious man who employs her and about how her powers awakened.
Unless one of us disappears, 
she'll probably die.
ما لم يختفي أحدٌ منّا، ستموت على الأرجح
Wenn nicht einer von uns verschwindet,
wird sie wohl sterben.
Si uno de los dos no desaparece,
ella morirá.
Si uno de los dos no desaparece,
ella morirá.
Ce qui veut dire…
Se uno di noi due
A não ser que um de nós suma, ela vai morrer.
Если один из нас не исчезнет,
она, скорее всего, умрёт.