The odd one

Hi and my name is Kenya. This is the terrible horrible that was my life. A charming guy That I can't bring myself to let go of and a devil sister.... Oh you thought I was joking when I said devil? No. Somethings odd. Somethings odd about her. Out of all the people in the world I can't help but think that we were chosen for this.. That I was meant for THEM for her, the odd one... But why?