The title is a little self evedent. Remus POV and what he might have been thinking the night Voldemort "died" SiriusRemus
Remus POV while going through transformation
Sirius POV while in Azkaban, about the few memories that he was tormented by but couldn't live without SiriusRemus
About wanting to save someone before they are forced to live through the same things you have went through. SeverusHarry, Severus POV
Written Pre-5th Book. Sirius POV, broken and alone,he is forced to dwell on how eveything seems to slip out of his reach and shatter.