The sake and the bunny

Tom hates that fact that his sister is growing up and being independent without him and he is not happy, in the beginning, it was just the two of them, In wools orphanage nobody dared go near them in fear of him.

It all changed that day in Hogwarts in 1st year when they got separated into different houses her in hufflepuff and him, Slytherin.

She met a boy called Alexander McLaggen within the same house as her.
They became inseparable and tom could feel his control on her slipping.

Tom riddled X sister oc
AU