Ryôta Koyama Details Cast On MovieCast On TV Name Ryôta Koyama Also Known As Birthday Gender Male IMDB Ryôta Koyama profile on IMDB Place of Birth As: Toshio Saeki2000-02-11Ju-on: The Curse... As: Toshio Saeki2000-03-25Ju-On: The Curse 2... As: Unknown2014-05-03Broadcast Dekinai Fo... As: Unknown2014-06-04Broadcast Dekinai Fo... As: Unknown2014-10-02Broadcast Dekinai Fo... As: Unknown2014-08-02Broadcast Dekinai Fo... As: Grandson Visiting Te1997-10-30Fireworks...