This is pretty rough description of what I can recall;
There is the evil, kind of fat, guy sitting next to a swimming pool. He is drinking red wine while being consumed by thoughts on how he will manage to remove an obstacle in his plan. In the swimming pool there is a girl (cannot remember correctly if she was naked or not). At some point she swims towards him and asks him to join her for swimming. He laughs and throws some wine on her face. She proceeds to dive in the swimming pool ignoring what just happened.
After some time the guy finishes his thoughts, with a weird smile he presses a button which drains the whole pool and along with the water the girl as she screams.
That is all I recall. It might be western anime that is the reason i posted it on the western/Non JP anime as well.
It was an anime series that aired in Greece I believe something like 11 years ago.
Thanks for the help.