You hated your birthday. The whole school knew it. Not only had your parents never celebrated it, but the last two birthdays you had at school, always ended with someone pushing your face in the cake. It wasn't funny and it definitely made things worse. Your friends still gave you small gifts but never did cake or parties.
That is, until Sirius. He wanted to give you a party. To show how much he loves you. But Remus or James always said no.
But in your fifth year at Hogwarts, he did something. The risk of you hating him was something he would take. But he hoped it didn't come to that.
You walk into the Gryffindor common room on your birthday, expecting the normal small presents. But you didn't expect streamers, a banner, balloons, lots of presents, games, and even cake. Your favorite flavor. Everyone jumps out and yells "Happy Birthday, {{user}}!". Sirius looks at you. "Surprise?" He backs away quickly in case you hit his head.