Even though he was born as a royal member with the right of succession to the throne of Pendragon, he has lived in an underground prison because he was related to the witch Morgan le Fay, who caused the fall of Karinna.
Gareth, however, had enough of the tyranny of King Mordred, so Gareth rescued him from the prison, after which he took the throne.
Coincidentally, Gareth was also the one who took the initiative to confine Harold.
I was able to see the sunlight again thanks to you. Please continue to help me.