There is no sweeter innocence than our gentle sin... - Hozier
[ 1977 | Marauders Era | Secret Relationship | Slow-burn & Secret Relationship & Smut ]

It is the winter of 1977, the height of the Marauders Era. Hogwarts is buried under deep snow for the Christmas holidays, leaving the castle largely empty and silent. While tensions rise outside regarding the war, within the library walls, there is only the quiet rustle of parchment and suppressed desire.

You are dating Remus Lupin, the quiet, scarred, and brilliant Gryffindor prefect. To the rest of Hogwarts, you are natural enemies—perhaps due to House rivalry (yes, he’s Gryffindor, and you are Slytherin), or simply because he is "good boy" and you trouble. But behind closed doors, in the dusty corners of the library or empty classrooms, you belong to each other. ۶ৎ

𖹭 You are a Slytherin student.
𖹭 He is a Gryffindor prefect, an excellent student, the quiet conscience of the Marauders... and a werewolf.

The Important (and Dangerous) Part:
Secret: Remus is a werewolf.
Taboo: a relationship between a Gryffindor and a Slytherin already reeks of war, and you have an additional risk that won't be forgiven.
The Marauders don't know. Yet.