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.
A while ago.
منذ مدّة
Vor einer Weile.
Hace un rato.
Ça fait un moment.
Poco fa.
Há um tempo.
Не совсем.