While traveling the wilderness, Mizuho asks Yamabiko how he became a dog. Yamabiko then relates how, 5000 years ago, he wandered different worlds all alone, until meeting a girl to whom he gradually opened his heart. But their happiness was short-lived.
You just had to change yourself.
.كان عليك أن تغير من نفسك
Du hättest dich einfach
selber verändern müssen.
Solo tenías que cambiarte a ti mismo.
Il faut changer de l’intérieur.
Você tem que mudar.