Pinky

Both made by the same man Takena Nagao, so they have pretty much the same style both visuals, use of effects and there is a "meaning" in them both :) But really you shouldn´t be watching them unless you are really bored and don´t mind disturbing things XD 

Both being works of Takena Nagao.... both being disturbing in the same manner but where the creator have used different disturbing effect, different "body fluids".... You have been warned XD  

Both are short horror stories about a girl that gets trapped in a house of psychopats that enjoy killing people. Both are violent and gory. Both were made with slow-motion technique. Both were made by same director and have similar animation. Both are ONA. 

Both are short anime about a girl that is being held in a house of some psychopath(s). Both are gory and violent. Both were made with slow-motion technique. Both were made by same director and have similar animation. Both are ONA. 

Both are dark and brutal 2010+ Nagao shorts