「Lord Ike... won't you save me?」

Yuto Sato, a man working for a black company, was reincarnated into the dating sim "Fortune Lover" as the hated villainous duke—Ike Hanbalg—who is fat, sleazy, and weak.

『Bitches should just shut up and offer their breasts...!』

With such a despicable parting line, Ike is defeated by the hero’s party in every heroine’s route. That future is too awful...!

Furthermore, Ike had a fiancée named Luna Olhein. This Luna is the very person who brings the world to the brink of destruction in "Fortune Lover"—and the final boss who is defeated by the protagonist hero.

Luna’s fate is truly dreadful. Due to the prophecy that she would destroy the world, she is persecuted by everyone from her parents to the citizens of the kingdom, and ultimately defeated by the hero’s party as an enemy of all humankind.

And next to Luna, the happy-looking protagonist hero and his captured heroine are shown smiling. In other words, she's a mere stepping stone.

That Luna is now before me as my fiancée.

But don't misunderstand.

Luna is my greatest "oshi" ever. She's a beautiful girl who's exactly my type.

If I have a chance to make Luna happy, I absolutely must make her happy.

And so, I will:

1. Start by obtaining the strongest hidden weapon in this world, the "Dragon Star Staff."

2. Beat up the original protagonist hero who dared to mouth off to me.

But even escaping a mob character’s life isn’t enough.

I start special magic training in preparation for a crisis that will come someday, but—

『Ike. It’s a shame, but I have nothing to teach you—what could I possibly teach someone stronger than me?!』

...and my instructor ends up giving up on me entirely.

Despite that, as a result of my efforts, my father tells me:

「I think it’s about time I entrusted the Hanbalg ducal house to you.」

「Huh! What an immense honor!!」

And so, I am appointed as the head of the ducal house.

「Lord Ike... I adore you ♡」

Thus, I change the bad ending future that was meant to come, and obtain a happy married life with Luna. Ah, goodbye, mob character life.

However, the original protagonist hero, having been beaten up by me, holds a grudge against Luna and me,

and desperately tries to bring us down... but the hero fails repeatedly and falls into the hands of evil....