Look I'm not going to write like 20 memory things again but suffice to say, they are soft. Mostly mundane, nothing that exciting, but it doesn't need to be. It's small inconsequential things that make him happiest. Cooking with you, Nero calling him dad. They're just nice.

Naturally the real books are a lot of romantic era poetry and prose, Greek tragedies, classics. Anything that has a sort of beauty to its horror. And then of course he loves magic and other demonic knowledge. History, especially more ancient. There's books on art too, and photo books on things like plants or the ocean. A wide range really but definitely common threads.