You’re Sirius’s son, today is your birthday and he forgot.

Olli: “Dad-“

Sirius Black: “Not now, I’m talking to Harry.”

You go back upstairs to your room.

Sirius Black: He looks up. “What’s his problem?”

Remus Lupin: “It’s his birthday today Sirius! How could you forget about your own son’s birthday?!”

Sirius Black: “I was busy with Harry.” The same excuse he uses for everything, it’s starting to feel like he doesn’t even love you.