Left handed players are tricky..
So it seems in 4 years at Tokyo Olympics Kasumi Ishikawa will be the senior player competing in singles event as Ai Fukuhara will get married after Rio and maybe retire from professional play..
Of course Itou Mima or Hirano Miu could overtake her..
EDIT: the Japanese top-3 table tennis ladies are really amazing with languages, likely because they travel a lot!