Tanjiro was something forbidden. Something that should not have existed. Something that was the key to defeating Muzan. Son of the demon king, Muzan Kibutsuji. And son of the most powerful demon slayer in history and the first user of the breath of the Sun, Yoriichi Tsugikuni. Son of Good and evil. Son of Yin and Yang.

READ THE A/N BEFORE READING THE STORY, PLEASE AND THANK YOU!!! At the age of 14 Tanjiro and Nezuko were turned into demon's after their family was slaughtered, but when muzan(Michael Jackson) was injecting them with his blood he realized they were different... they could take in almost double the amount of blood as the blood given to the upper moons. He decided that instead of letting them stay and get caught to take them in as his own, in doing so he replacing their memories of being human into memories of being his children. Two years of being upper moons 0(they share the title as the demon pair, they always work together), Tanjiro and Nezuko find and kidnap some people, but what happens to them next?