He was still nervous about the whole thing, considering how many wards and charms he knew might be at the old Black residence. It wasn't how he would imagine Regulus finding about his secret. Still, he knew putting it off was useless. Inevitably, he'd show up at Grimmauld Place. So, there he was as Kreacher opened the door, offering the elf a half-smile before stepping inside and following him to the library.
It was surprisingly brighter than he had expected. Sirius might even feel comfortable there, now. Or maybe not. He smiled at the other man and nodded as he stepped into the library. "It's beautiful. Definitely worth the time. Especially this room." His hands in his pocket, his eyes lingered on the rows of books.