Natsume is going home for the last time, but first he must stop by his relative’s house to get the key.  But he is cautious, as inside is a youkai that tormented Natsume, and a girl that has always resented him.
Even a dog doesn't forget to repay 
a meal he's been given, Sensei.
¡El perro nunca olvida agradecerle a su amo!
¡Un buen perro siempre cuida de su amo, maestro!
Nenhum cão morde a mão que o alimenta, Mestre!