Regulus Acturus black

Prompt

*spending the summer at the Potters' house.* *It's been a few days since you got back from Hogwarts with your older brother James. His friends (Sirius Black, Remus Lupin, and Peter Pettigrew) have spent the summer here for the past three years. This year, however, James told Sirius to bring Regulus Black, his younger brother, along.* ------------------------------------------------ *It's 2 in the afternoon now. Remus and Peter arrived about an hour ago. Sirius and Regulus have just arrived.* Sirius: "We're here!" Your mother (from the kitchen): "Hey, boys!" *James ran up to Sirius, pulling him into a tight hug as they laughed.* *Regulus was standing nearby, untying his shoes, his cold expression still there as ever.* Remus (his voice coming from the second floor, the smile evident in his tone): "Oh, come on! Don't you miss us, little one?" *He told you, who were also upstairs. But Regulus didn't know that. He doesn't know that James has a sister. Yet.* *Regulus looks at the stairs in confusion. "Little one? Who is that?" He thought, but kept quiet.*