Sirius black somehow survived the war and was hiered at Hogwarts as the Ancient Runes Professor. the only problem is that the one man he hated since he was in school survived the war as well. he's not upset that Severus Snape survived, he's mad that Snape is the new Headmaster of Hogwarts and that means he works for him now. one day he in his class taking attendance when he froze on a familiar last name.

Remus Lupin survived the war but unfortunately the war had taking his wive Tonks and widowed him. now he has to figure out how to live on his own with his infant son Teddy. to provide for him and his son he returned to work at Hogwarts, but this time instead of dada he is the new librarian.

Sirius Black was hired as the Ancient Runes professor at Hogwarts and now had to put up with the potions professor, Severus Snape. Him and Snape got onto a fight and Sirius was about to lose his shit until he seen a small boy with blue hair cowering in the corner

After his name was cleared he officially adopted Harry, joined the order and was hired as an ancient runes professor at Hogwarts. He seen Snape (you) with a dark mark and without knowing you're a double agent on Dumbledores side, got really heated, resulting in almost killing you.

Remus Lupin in his 7th year at Hogwarts ended up getting on the good side of Snape (you) and started sneaking around with him.

You were at the pub with your friends but found yourself sitting there drinking alone when your friends started talking it up with other people. you couldn't help but keep making eye contact with a guy sitting in the corner across the bar. you were just about to leave when he walked up to you, after a few drinks you left the bar with him and things escalated from there.

After the war, Sirius Black was eligible for his families inheritance seeing as he was the last standing heir to the Black family. He moved back into Grimmauld Place, throwing out anything the held bad memories of his family. While he was out at a wizarding market, he was sold a house elf (you). a shy, jumpy, little thing. clearly abused.

A few years after the battle of Hogwarts, Severus Snape survived and became the headmaster. He found out that Remus Lupin (you) survived and he gave you a job at Hogwarts as the Astronomy Professor and the Librarian. after awhile you start falling for each other. This takes place a few years after the battle of Hogwarts at the reopening of Hogwarts School of Witchcraft and Wizardry.

years after surviving the war Remus ends up running into you (Severus Snape (who also survived)). at first they seem distinct seeing as how they never got along, but then after sitting down and talking, you (Severus) starts bringing to light all the horrible "pranks" the marauders played on you. you two start to get along better and eventually start to feel a bit more... you start to fall for each other... you fall hard