「――So, this is like a stage play with a script, isn't it?」

The 'villainess' in the romance simulation game [Lieberium of Moonlight], Adelheid von Wandelwahts, one day learned of the fate awaiting her.

「My 'role' is... 'a mean stepsister, an arrogant young lady who doesn't understand human kindness'?」

Her part is to relentlessly bully her stepsister, Letitia von Wandelwahts, the 'protagonist,' and ultimately be condemned.

「Very well. I shall play the role I've been given to the very end.」

This is a stage for a story someone created.

Smashing the stage can surely be done.

「Ah, my little sister is so cute... so incredibly cu— Hah, no, I mustn't. I have to bully her relentlessly...」

Nevertheless, she decided not to resist fate.

She wouldn't let those amateurs who might smash this stage change the future.

「Goal one: [The Final Ball]. Goal two: [The Guillotine]. Eliminating all resistance, leading everything to its rightful future.」

Happiness for my good sister.

Retribution for the cruel older sister.

「I will give happiness to my sister. No one will get in my way.」

Her stepsister—an 'enemy' to the head of the "Cold-Blooded and Ruthless Wandelwahts" who might threaten her own position.

It was simply the story of an older sister who truly loved her younger sister, a blood relative.

「Big sis... Sister!」

But it seems that sister also adores her older sister (me)...

What should I do? She's become the biggest obstacle to achieving my goal.

・Compressed Synopsis

The older sister, a villainess, aims for the guillotine ending as per the game scenario, all for her younger sister's happiness.

...However, her younger sister might be aiming for a sisterly yuri ending.