A short story from many years ago
The person who saved me that day was a gentle man wearing glasses. He had blue pupils and clear blood vessels. Now, I just have to obey his orders, like a puppet. I would be fine with that, because the human specialty of thinking and introspection is something I struggle with and suffer from. Since I am not human, there is no need to do such troublesome things.
Intention: Blood-sucking fails and becomes a reactionary emotion