Yukari Yakumo (EntityTopic, 9)
From Compile Worlds
Yukari Yakumo is a really beautiful and game breakingly powerful woman whom everyone wants to marry even though she's an extremely old grandma just a 17-year-old. She's not just a game breaker. She's also a reality warper with the power to manipulate borders. Adding to her tendency to get bored, if you think about it too much, doesn't it strike you really weird?
Yukari is usually portrayed as a painfully lazy woman who makes her shikigami Ran Yakumo do all the work for her instead of using her reality haxx to do them all herself. Whenever she IS awake, she still fools around with her reality haxx, even pulling humans from the outside world to her house. Needless to say, many of her lovers in the outside world wants the same to be done to them. Because of this, many people seem to forget that she is a super genius Math nut.
When there is trouble, she may sometimes trick the shrine maiden or other people to solve it for her so she can still go on with her beauty sleep. Rarely does she even do it herself, which is actually much faster than the former.