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…
If you want to complain,
Si tienes alguna queja, dila cuando 
logres salir de ese frasco.
Si tienes alguna queja, dímela cuando salgas de este frasco.
Se não estiver de acordo, venha reclamar
 comigo quando sair da garrafa.