And while that may be a bit of a reprieve, it doesn’t quench the anger that has turned into downright fiery hatred towards the three that betrayed them. James and Peter were Remus and Sirius’ best friends, they went through everything together and very much so resented Voldemort together. And Regulus, while Sirius understood that he was still living with their parents and he’s starkly aware of the way their family is, actually committing himself to the Dark Lord after becoming so close with the marauders and fixing his relationship with his older brother just hurts.