I really, really love your Regulus. You have done an amazingly good job of giving him the depth that canon never provided.

7. Regulus has wanted to kill James Potter since 7.30am on the 6th October, 1972. This was two minutes after he had walked past the Gryffindor table and overheard Sirius tell Potter that he was better than a brother.

This is so painful and so telling. Poor Reggie. :(