Dragon Slayer: Eiyū Densetsu (TurboGrafx-16)

Dragon Slayer: Eiyū Densetsu tells the story of a young prince named Selios. One day his old teacher Raiyas sends him to a nearby cave to retrieve a magic weapon. When the prince returns, he finds the house attacked by monsters. Raiyas tells him to seek help in the castle of a baron, whose country has always been allies with theirs for a long time. However, the baron betrays Selios' trust and imprisons him. The young prince manages to escape, but without the possibility to return he has no choice but to wander through the land, trying to find trustworthy companions who would help him to save his country.