Going over to his door and opening it, Hadrian found Severus on the other side. He sighed and said, "I'm needed at Malfoy Manor. Do you want to come with me?"
"Yes. Just let me change clothes."
"Meet me in the Floo Room when you're done."
Severus turned and left, leaving Hadrian to change in peace. Going back to his closet, Hadrian picked out a emerald green shirt, black trousers, and a dark green robe to wear. Tossing his cousin's oversize hand-me-down clothes into the hamper, Hadrian quickly took a much needed shower and changed clothes.
Afterwards, Hadrian called for Flopsy to get to the Floo Room as he knew he would get lost otherwise. When he reached the Floo Room, he saw Severus sitting down, waiting. Upon his entrance, Severus stood up and headed to the floo. Motioning for Hadrian to join him, Severus grabbed a pinch of floo powder. After making sure Hadrian was holding on to him, Severus threw the floo powder into the fire while calling out, "Malfoy Manor!" and stepped in with Hadrian.
Once they arrived at Malfoy Manor, Hadrian promptly fell out of the grate. The only thing keeping him from landing on his face was Severus' hold on him. Severus shook his head and said, "We'll need to teach you how to floo better."
Hadrian just nodded. "I need to go to Lucius' study. Do you want to stay in the library or stay here to wait?" Severus asked.
"Library."
Severus nodded and motioned for Hadrian to follow him. After being dropped off at the library, Hadrian looked around at all the books. He wandered over to the nearest shelf and picked a random book to read. The book turned out to be one on rituals.
As he was reading, Hadrian heard footsteps coming closer. He frowned in confusion for it was too light to be Severus. The library door opened and Draco rushed in, grabbed a book, and started to head out, only to stop and turn around. As soon as he saw Hadrian, a brow raised before being joined by the other. "Potter! What are you doing here?"
Surprised to be recognized, Hadrian sighed and held up the book before saying, "I'm reading. Shouldn't that have been obvious? Also, do not call me Potter."
Draco scowled and marched forward. He snatched the book out of Hadrian's grasp and said, "I meant what are you doing in my home? And why shouldn't I call you Potter?"
Before Hadrian could say anything, there was a cough from the entrance. Both boys started and looked over to see Lucius, Severus, and Marvolo standing there.