I never imagined becoming a Demon King inside a novel. Worse yet, I didn't inherit the Demon King's power, leaving me incredibly weak. On top of that, I must face the protagonist in the future, knowing he is determined to kill me because of his hatred for demons. Now, I'm left with two choices: either I grow stronger and take down the protagonist to survive, or attempt to befriend him against all odds. However, that's not the point because my real goal is to live a peaceful life without any conflict, but as a Demon King, that seems impossible to avoid. Ah, dammit! Just thinking about it already stresses me out! Whatever! My life comes first, so I'm going to do whatever it takes to stay alive! Follow Zealot on his thrilling adventure to become stronger, where every step is packed with excitement and peril! What to know: Book One mostly grinding. Book Two mostly kicking ass. What to expect: Slow start, but get more intense starting from Chapter Two or Three onwards! Weak to strong. A mix of everything, including summoning minions, pets and many more. A lot of adventurers and actions. There is also some romance later in the story. Medium pace story, not too fast; not too slow. Story will be very long, at least multiple books or more. Additional Info: Prologue chapter is written in 1st person, but everything after that will be in 3rd person writing.