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.
"My little sister"?
أختي الصّغيرة
Meine kleine Schwester …
Mi hermana menor.
Mi hermana pequeña.
Ma propre sœur.
La mia sorellina.
"Minha irmã mais nova"?
От моей сестры.