Towa Higurashi learns about an incident that took place decades ago involving a half demon named Inuyasha and a priestess named Kagome.
I can't say anything. 
Or else I'd change history.
.لا يمكنني قول أيّ شيء وإلّا فقد أغيّر التاريخ بأكمله
Ich darf ihm nichts verraten,
sonst schreibe ich die Geschichte um …
Je dois rien dire…
Sinon, le futur sera modifié.
Não diga nada...
Ou a história mudará.
Нельзя ничего говорить. 
Иначе изменю историю.