'Go away!' Kazuki yells and furiously throws a book. 'I don't want a magical cat anymore!'
The cat licks his whiskers with its snake tongue. 'I fear that you don't quite understand yet, Kazuki,' he says sweetly.
'Wizards don't keep cats, cats keep wizards.'

A wizard or witch without a cat is like a forest nymphe without a tree. Therefor, Kazuki is more than happy when he inherits the witch cat from his dead wizard uncle. However, the cat has its own dark plans with his new master. Laying on Kazuki's lap purring isn't quite a part of that...