Order

Percy had always wanted things to be in a certain order. You couldn’t do one thing if you hadn’t done something else first. If you were at potions and you did that, you would screw up your potion, so Percy wanted everything in order, thank you very much. Even his books had a certain order by subject and then by writer.
      That’s easy and doable, unless you live together with Oliver Wood. Oliver had a habit of taking one of Percy’s books, reading a small bit of it, deeming it boring and putting it back. But he didn’t put it back in the same place, oh no, he always put it at another place. It would drive Percy crazy. But after living with Oliver for seven years in one dorm and after that five years in one apartment, Percy was used to it. But only from Oliver. Anybody else would get a lecture for an hour.