The First Day (Part 1)

"Sirius, remember to be a good boy! And remember where the Slytherin common room is? Good. I'll meet you in a year. Bye!" Orion Black shouted to his son. The handsome, dark-haired 11-year-old rolled his eyes and ruffled his younger brother's hair.

"Sirius, don't go!" the latter wailed sadly. Sirius shook his head with an identical expression on his face.

"I'll miss you too, Reg. Don't worry, You'll be in Hogwarts in two years too! We'll have lots of fun together! Awww, come on, gimme a hug. Remember, I love you too," Sirius kissed Regulus' forehead gently. Regulus sobbed uncontrollably. 

"REGULUS ARCTURUS BLACK! Control yourself!" Walburga Black spat. Sirius looked disapprovingly at his mother as he broke away from a still-sobbing Regulus. 

"Bye Reg," he whispered softly before boarding the Hogwarts Express.