Hee! Very sweet and funny. Some great "word pictures" - Regulus Black's arse in fourth year and Severus suddenly discovering that no, he's *not* pining for Lily! And Harry imagining Voldemort returning from the beyond - in a tea towel. *sporfle*
The first part, Harry rescuing Severus from the Shack, and Minerva wanting to help - very nice. Love that post-DH Snape H/C!