Natsume overhears whispers that a powerful youkai is reviving, later that evening he is trapped in a bottle as an offering.  Humans can’t see or hear him, so Nyanko-sensei decides to help the “best” way he can…
Jeez...
¡Rayos! Trato de advertirle 
y mira qué pasa.
Vaya por Dios... encima que trato de protegerte.
Caramba...