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…
There's no air holes 
in that bottle either.
Al parecer el frasco no 
tiene ningún orificio.
El frasco no tiene ningún orificio para respirar.
O ar também não passa pela garrafa.