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.
then becomes invisible again 
when the danger has passed.
ثمّ يختفي من جديد عندما يزول الخطر
und wurde unsichtbar,
als die Gefahr abgewehrt war.
y se volvió invisible de nuevo
tras completar su misión.
Une fois son devoir accompli,
il disparaît à nouveau.
per poi diventare di nuovo invisibile
 una volta che il pericolo è passato.
e voltou a ficar invisível
depois de completar a missão.
и становится невидимым, 
когда опасность миновала.