Sirius didn't remember it until he was sent to Azkaban.
He was dumped by a Muggle girl.
Never looked back.
When school started, he gained a Muggle Studies professor.
After that, Sirius remembered that night in the dilapidated professor's lounge, when he hooked her earrings and whispered to her, "You are sick, you have been having a fever."
"It's not hot enough, this isn't enough." She kissed him.
Tips
-Sister-brother love.
-You can start reading directly from the beginning of Chapter 3, with flashbacks to the first two chapters.
- Welcome to collect, happy reading.
- Recommend my good friend Doraemon to the fic "Are you happy today?" It's super comfortable, you can jump in if you like it.
Concept: Passionate eighteen years old