Investigating the mass teleportation leads Rudeus to seek out his most elusive classmate: the brilliant Silent Sevenstar. But when he calls at Silent's laboratory tower, he finds a familiar face that he didn't expect—and doesn't welcome.
If we do anything to significantly 
alter history, the world will erase us.
إن فعلنا أي شيء من شأنه أن يعدّل 
.التاريخ بشكل كبير، سيمحونا العالم
Wenn wir ihre Geschichte maßgeblich
verändern, werden wir sicher aus ihr entfernt.
Si cambiamos la historia,
el mundo nos eliminará.
Si cambiamos la historia,
el mundo nos eliminará.
Il pourrait nous supprimer
si on change le cours de l’histoire.
Se le nostre azioni mutassero la storia,
 sono certa che questo mondo ci cancellerebbe.
Se fizermos algo que mude muito
a história, o mundo vai nos apagar.
И, если сильно изменим ход событий,
он нас просто уничтожит.