Вот! Не думал, что мне встретится фик, который может сравниться с любимым Fairy Wings! Однако же...

http://www.theparapet.net/ls/FoxFeather/tale1.html

A Winter's Tale
by FoxFeather
Foxfeather's epic adventure with a few *interesting* twists in the SS and RL relationship . . .
NC-17
Snape x Lupin

И кстати о "любимом Fairy Wings"...

http://www.angelfire.com/magic/moon...airywings1.html

Fairy Wings
by Sean aka Whistle Skiptag
A young Sirius Black makes his opinion and temperament known to a young Mr. Potter. Years later, Remus Lupin is encouraged to take in a reluctant houseguest. And there is at least one point in the story wherein Severus Snape is forced to sport butterfly wings.
PG-13
Lupin x Snape