Ninjago : Kai's dark secret

Book one ; What will happen after all these years that Kai reveals his darker self, that not even his parents or sister are aware of? Will he stay with the ninja once it breaks free? Or will Kai team with the wrong side? ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖ (This story will take place after the new season, 15 crystallised) Story & AU R...