Indigo had been sitting next to Vita as he waited for the lesson to start, but now that they were moving that might be more complicated. She was supposed to be in the back, since she was a prefect. Indigo was tempted to drift that way as well, but he was worried about getting in trouble. He was still near the back, but decided that if he couldn't be next to Vita he could walk with Nina. He gave his friend a small smile as he fell into step beside her.

What did he know about the school's ghosts? Not much, to be honest. Indigo didn't really pay them much attention, beyond what was polite. He hadn't been there since his first year, either, so it wasn't like he'd been among this school's ghosts his entire school career. If he was asked about ghosts at Beauxbatons that might be an easier question, but she had asked specifically about Hogwarts, so he tried to come up with a fact he knew about that. "The Grey Lady's name is actually Helena Ravenclaw, and her mother was Rowena Ravenclaw, one of the founders of Hogwarts." That was probably pretty common knowledge, but it was really the best Indigo could do.