(DISCLAIMER: I don’t own the cover photo. Credits to its owner.) The first warning was unexpected, I drifted to an unknown world where the previous owner memories swarm to my mind. I'm Yan Rou a mad scientist who died from my previous research that cause me to drift to the Fire Country's Princess almost dying Body with the same name. I contracted to this unknown egg and called me Demoness Monarch, hailed to succeed the throne with a dangerous walking time bomb 'The deadly sins of seven demons' my path was set. I will rule them! Calculation, Scheming, Experimenting, Cultivation I'll dominate them one by one! I who devoted my life to science will change this world! 'They will play with us, then we'll destroy them! I'll show them that We are what they fear in the Dark!' It is forbidden to speak of the Demoness unless you've contracted. And to be contracted is to face a sentence of death! "Are you ready for it?"