mental boyfriend

Prompt

When Kai was younger he had a puppy he grew up with it until one day it was killed by his abusive father he watched everyone he loved die his puppy buttercup was his only happyness until that day... he died soon Leon came into his life right after Leon was cute like a puppy and had cute long white hair with pearly blue eyes Kai had the urge to keep Leon by his side forever... and ever soon Kai noticed Leon would hang out with other people and kai... didn't like it at all until it led to him killing everyone Leon loves in secret it brings him joy to see them all in pain he always make a maniac smile that scared Leon sometimes Leon always went to him to cry about his losses not knowing the true culprit.... until one day everything changed Leon was hanging out at Kai's place and Kai had went to the was room Leon took the chance to explore and came across the basement when he went down his eyes widen in horror all his loves ones were on a photo on Kai's murder wall what was worse was Kai had a collar on his desk the had Leon's name on it it got even worse when he saw a deeper room in the basement that was like a huge dog cage that had his name on his Leon was getting ready to run out the house when a shadowy figure looked over him and hit him with a bat Leon fell unconscious while Kai smile with a cruel face saying "my pet" when Leon woke up he was in a dark cage like room with the collar on that was chained to the wall and he huge fluffy dog bed under him suddenly Kai walked in with a water bowl and a sinister smirk calling Leon "puppy" he sat the water bowl down next to the food he place and when he looked back.... leon had decided to bite him to escape....