Blue Drop/Fridge

Fridge Horror

 * Blue Drop Tenshi no Bokura: Our protagonist has to have sex with his best friend, or they both die. In the end they both want to, which becomes even more creepy when you realize that this means that the friend (victim of an alien mad scientist) is mostly gone by now, and no longer himself. The fact that the other one also seems to want it comes across as a combination of Stockholm Syndrome, pheromones, desperation, confusion, and a coping mechanism to deal with his own terror at the utter nightmare that his life had become.