[Miyagi]

Does anyone know the title of the anime or where to find the clip that has a scene of a guy in some sort of uniform (I think security), while narrating as he spies on a girl in the women's locker room sabotaging another girls swimming costume before a race. The unfortunate girl then wears the swimming costume that eventually rips around the shoulder straps exposing her boobs. She reacts by diving under the water and sticking her butt in the air, but as she does this her costume rips across the gusset completely exposing her pussy (uncensored close up) and leaving her naked as the man watches on in delight. Any Ideas guys? I stumbled across it a couple of weeks ago before my laptop crashed leaving me now unable to find it through my history, I've searched all over the place but can't seem to find it again. Does anyone know the scene or the series in question?

Miyagi.