A Certain Demon King Strives to Live in a New World in Order Not to Be Reincarnated Again.

What! Onee-sama, the daughter of the Demon King, actually became a hero? I'm in trouble. The brave sister who is my sister wants to kill me as the new Demon King. What should I do? Of course it is... Don't be a devil! I choose to be reincarnated! The Demon King who was reincarnated into the new world woke up and was surrounded by a group of big men and girls? Don't come here! I'm still a kid! I, the devil king, who is a dignified homebody villain, actually want to save the world and girls? Is this a mistake? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.