Natsume is walking home one day when he's accosted by a flying Tengu, who lifts him up into the sky!  Meanwhile, Nyanko-sensei is stuck in a well, where Nanase tells him a story about how she learned to never get close to a youkai.
If I ever give into 
this youkai energy
Si estoy por convertirme en un malvado por 
intoxicarme con la energía venenosa de los youkai,
Si acabo sucumbiendo a este poder y convirtiéndome en un ser maligno,
Se eu sucumbir à energia dos youkai