Watch Summer Days with Coo (2007) HD Full Movie Free on solarmovie.do. Watch Summer Days with Coo (2007) online free. A boy befriends an orphaned water spirit, or Kappa, he found dried up and buried in a riverbank. He ...A boy befriends an orphaned water spirit, or Kappa, he found dried up and buried in a riverbank. He and his family help the creature adjust to life in the modern world.