Germany. 24 year old man had intentionally caused the death of his 28 year old domineering gay partner. During the strangulation fetish session he was acting as a safe spotter. But was on purpose strongly encouraging the 28 year old to push it further and further, while hand “stimulating” him. And when finally his partner went too far and had passed out, he just stood and watched him getting strangled to death. And immediately right after that calling police to report accidental death and that he had found him like that when he came to his home. But police got suspicious. And upon further interrogation the 24 year old had finally admitted of planning death of his gay lover. As a self-defense against his partner se-xually using him for months in very domineering degrading rough way, like a s-ex toy slave. With his hands being tied behind his back on many occasions. And blackmailing him by threatening to reveal certain legal issues from the 24 year old's past to his government job employer, if he dared to leave him. On scene photos deceased can be seen as he was found. Sitting with his buttocks on a slightly extended part of the ottoman cube and with a belt holding him by the neck, zip tied to the leg of an overturned coffee table from above him. Thus keeping the corpse in the same position as when he got strangled. Mirror was placed in front of him, so he could to look at himself during the process and see his partner “stimulating” him. There were dripping traces of his dried sperm on the mirror, indicating ejaculation before passing out. A metal kitchen tray was under him, so his sperm would not get on the carpet. Corpse’s penis also kept most of it erect status.