During the fight with the demon, a ring suddenly appeared and release huge energy to defeat the demon. After healed by Grandpa Ginkgo, Prince of Ye found out he can saw the monster now.
And this is my contract ghost, Mochi.
وهذا شبحي المُتعاقد معي، موتشي
Und das ist mein Vertragsgeist, Mochi.
Y este es mi fantasma personal, Mochi.
Et voici mon spectre, Mochi.
E questo è il mio fantasma famiglio, Mochi.
Este é o fantasma com que tenho
um contrato, Mochi.
А это Мочи — дух, с которым 
у меня контракт.