Simplify the following text for a Grade 10 native English-speaking person.
Original: The main protagonist is 16-year old Setsuna F Seiei , a taciturn young man who grew up in the war-torn Kurdistan Republic .
Simplified: The main protagonist is 16-year old Setsuna F Seiei , a quiet , taciturn young man who grew up in the war-torn Krugis Republic .