A mysterious phantom student is stalking Kazuya's school, and Kiriha says that there's no such thing as ghosts. That leaves only one explanation: another amasogi.
That it had to prevent someone 
from stealing Nishina-kun from me.
وأنّه توجّب عليه ضمان عدم قيام فتاة
بسرقةِ نيشينا-كن منّي
Ich müsste alles tun, damit Nishina
mir nicht weggenommen wird.
Que debía asegurarme de que nadie
me robara a Nishina-kun…
Que debía asegurarme de que nadie
me robara a Nishina-kun…
Je devais faire en sorte qu’une
certaine fille ne me le vole pas.
Che dovevo per forza assicurarmi che
nessuno mi rubasse il mio Nishina...
Que deveria impedir que alguém 
 roubasse Nishina-kun de mim.
Он должен защитить меня
от той, кто может увести Нишину.