first deafeat the leader of team aqua and then the red orb that his holding will shine then go to sootopolis where the cave of orgin is go to kyoger then the blue orb will shine kyoger will come to you but first make sure you have a lot of ultra ball or you can use master ball if you have you have battle it but make sure you can catch it.It will take more balls to throw on it because kyoger is so strong it goes in and out but i'm sure you can catch it imidiatlly if you use a master ball