Collared
Severus/Sirius
Magical dog collar
Works similar to love potion
Loyalty, submission, adoration
7th year
Sirius as Padfoot seeks out a lonely Severus on the Hogwarts grounds.
First to learn secrets to use against him, but after a while pitying his loneliness and also empathizing with his family situation.
Severus tries to adopt him as a pet so he has a friend.
Sirius can't let that happen and resists.
Severus gets desperate to tame him before the school year is over and he has to leave.
Gets a magical taming dog collar and tricks it on Padfoot.
Brings him to his dorm room, and goes to sleep with him in his bed.
Wakes up to a human Sirius going down on him and thinking it's a dream.
Panic ensues.
He is afraid Sirius will literally kill him, and so does not release him immediately. Also wants revenge.
Starts to feel more guilty as they get more intimate. Also starts falling for Sirius.
Sirius riding Sevs cock.
After being released Sirius is mortified and angry. Feeling used and abused but mostly angry because he enjoyed it and has lingering feelings of affection and tenderness.
Sirius gets revenge by turning the tables and abusing Severus in turn, rather cruelly at times.
But Severus feels guilty and let's him do most what he wants.
Lets him put the collar on him in turn at some point.
Virginity taken roughly against a hallway wall.
Blowjob in bathroom stall.