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.
I spent my days in
neither sadness nor joy,
قضيت أيامي لا أعرف 
،حزنًا ولا سعادة
Ich verbrachte meine Tage
ohne Freude und ohne Leid,
Pasé mis días sin tristeza ni alegría,
Je passais des journées
sans peine ni joie…
Meus dias passavam
sem alegria ou tristeza.