The tragedy unfolds. A mysterious fate has befallen Mumei and his classmates are the suspects. What has happened to our hero? And what is his connection with the new boy in class: Shuu Rinu. A line has been drawn and the truth about who is truly friend or foe comes to light. The stage is set and the curtain has been raised, it's time for the show.
If I were to use an analogy,
perhaps a sword and scabbard...
إن كنتُ سأستعين بتشبيه، ربما سيفٌ وغِمْد
Wie Schwert und Schwertscheide
zum Beispiel, würde ich sagen.
La espada y la vaina
es un buen ejemplo.
La espada y la vaina
es un buen ejemplo.
Si je devais les comparer…
je dirais une épée et son fourreau.
Sono come spada e fodero, immagino.
Se formos usar uma analogia, 
pode ser uma espada e uma bainha.