Chapter 1
Ting! —scrub scrub. "Phew, this is fucking exhausting. Think this is good enough?"
As Mom instructed, I'd polished the marble floor in the living room of the Im Family House until it gleamed.
That's when—ting! A coin dropped to the floor with a sharp metallic clink.
I definitely cleared out all the trash properly. What's this thing?
Coin: House Cleaning
• Emotion:Relationship Level +2pt
• Effect:Interest +1pt
• Tendency:Dominance +1pt
• Trait: None
—Ding.
The moment I picked up the coin, a bizarre window popped up in front of me. Then I was yanked into some unknown space, where I encountered a sexy older sister who called herself the Demon Sister.
And she hit me with a one-sided demand.
[Conquer the heroines around you.]
[Compete against people from other dimensions and emerge victorious.]
[Those who lag behind in conquest will face annihilation.]