Sarah and Serah are distinctly different sounding phonetically. :P
not in the game they're not.
This twenty-year-old boy was distinguished from childhood by strange qualities, a dreamer and an eccentric. A girl fell in love with him, and he went and sold her to a brothel...
Here in America (TM) we're lazy and slur our words a bit more than you fancy Brits do, so both (at least where I live, in New York) are pronounced Sair-ah