Title: Duty.
Characters: Sirius and Bellatrix.
Rating: T.
Word count: 1,200.
Summary: Sixteen year old Sirius can take no more of his family; he is leaving tonight.
Disclaimer: I don’t own Harry Potter.

I guess this is slightly AU as Bellatrix is the same age as Sirius.

( She always did appear at the most inappropriate moments )

( Bellatrix, post Azkaban )