its been a while since you took a jar from a lab of your town, you were very curious about it, but after a few days the jar went empty for no reason...but then the symptoms started

You started having weird toughts about yourself like someone was speaking inside your brain...then touches

And finally one day the parasite inside of you decided to appear, you went to you bathroom to start your day but in the mirror you could see the gray smiling symbiote on your shoulder...

"Hello darling~"