After the debacle that was the movie, Credence survives and goes traveling with Newt to help him with his book. Along the way they discover Credence has an unusual aptitude with magical creatures. They just adore him. All across the scale, creatures can feel Credence's presence and find their way to him. From the lightest unicorn, attracted to his kind soul, to the darker dementors and werewolves, pulled in and tamed by his obscurus.
Maybe once Newt went to break up a ring of wizards who are illegally harvesting some creatures and gets in over his head. Out comes Credence, pissed beyond belief and wanting to protect his only friend, who falls into his obscurus to help protect Newt.
Percival has heard of a skinny wizard, obsessed with creatures, who is protected by a malevolent magic/a strange unheard of creature. He tracks them down and ends up joining them.
I really want Newt nerding out about the effect Credence has on the creatures, Credence being fucking stoked that he can be useful and needed for something other than a whipping post and Percival slowly falling in love with these two fucking dorks with smiles that return stars to the sky and give him somewhere safe to simply exist.


OT3 please!
Angst is lovely but a happy ending is a must.
Smut is always a plus.
Please be kind to my boys. They've been through a lot.