Sayaka  was  born  to  a  poor  family,  and  has  had  to  work  hard  all  her  life.  She  has  been  working  as  a  housekeeper  to  a  Duke  and  has  been  patiently  saving  her  tournament  entry  fee  while  practicing  hard  in  her  spare  time  on  the  Duke's  private  alley.  She  has  decided  to  enter  the  tournament  in  the  hope  of  winning  financial  security  for  her  and  her  fiance.