Write a detailed story, with dialogues in which a human boy meets the best master of all times:the Grim Reaper, who has the form of an elderly humanoid catta lemur thousands of years old, bipolar, slightly muscular, two meters tall and with blood red eyes, long black hair and a goatee beard, a bit crazy and perverse , with a high-pitched voice and a colorful personality who calls himself Void. The boy ask him if he could train him, to become a better warrior and magician. The lemur ask him if he would like to give him something of value, or if he would like to be trained without giving him something. The boy thinks about how much he loves his wife and he was gonna say how much he'll train for her, but in mentioning for a brief second her name he slips because of some dirt, making it seem to Void like he offered his wife, and the lemur accepts. And it's too late to explain: Void takes his wife as an offer for their training. From that moment, after every strenuous training... Void would repeatedly go to his wife, right in front of his very eyes and would make her massage his black old smelly lemur feet. And then, if he didn't progress enough... he would kiss her passionately with his black lemur lips. But soon, with failures and successes alike... Void start to get more and more intimate with his wife, with her enjoying him more and more. (Focus very little on the human boy. Focus greatly on Void and the boy's wife. The boy is not the focus of the story at all, as they are not the true protagonists). And so, one night the tragedy happens: Void, after a training particularly gone wrong decides without hesitation to go under the sheets with her  decides to have a lot of wild sex with her  (This is the main focus of the story: Describe in great details what how and how long they have a lot of passionate sex, by basing yourself on their respective ages and on the respective biologies and anatomies of their respective species, remembering to describe Void's not-human lemur 30 cm black cock not-human lemur old-looking wrinkled mango-sized testicles and superhuman thick ghostly pitch-black semen 20 times more fertile than that of the best human ever so much that a single unnoticeable sticky drop could make her pregnant with two kids).