Saffi is a main character. He is a child or a teen.

He is inexperienced, excitable, childlike, but courageous and with a thirst for adventure. Saffi often speaks in a strong voice and shows a lot of emotion in his voice, and he expresses various emotions through the story.

Despite the fact that he is a child, he speaks in a somewhat more adult fashion that one would expect. Think Ash Ketchum from the Pokémon anime, for example. Like the rest of the main characters, he is competent, and should be cute and likeable.

Saffi's voice can be feminine, as long as one could reasonably interpret it as male: A voice that's kinda on the border that you can't quite tell whether it's male or female would work quite well.

Scope: 82 lines, avg 11 words per line