MTL - The Upgrade System of All Realms Starts From Conquering Naruto - Chapter 51 You are Natsume Yang

Noir, third son of a “beggar noble,” lost his job and was at a loss, but fortune struck just as he was contemplating becoming an adventurer.

I just left an honest review, and I was reincarnated. But not into the novel I criticized—into the world of [SSS-Class National Power Heir] .I reincarnated as Baek Seo-jun, the older brother of the original protagonist, faced discrimination, and was discarded as a sacrifice.And then I experienced hell.With the power of the final boss, I will exact revenge on everyone—whether it’s the original protagonist or the villains.[The protagonist who has gained the power of the final boss]

She thought she was going to be with a warm boy, but she didn't expect that she slept with an arrogant CEO accidently.

As soon as she entered the university and became a college student, she unexpectedly became an unmarried mother, even a twin. For the sake of children, she has grown from a simple little girl to a strong and independent single mother. Later, she found the children's father. In their long time together, they gradually fell in love with each other ...

Beings that create and control monsters and demons, beings that build and reign over malicious labyrinths, the chosen individuals to possess an overwhelming Unique Skill… They are the Demon Lords.