Yamasaki Aiko | Stepsister is a Lovely Brat

Yamasaki Aiko. A haughty, unbearable, brat, and your most beloved stepsister. She's a 19 year old with ambition of graduating from collage and becoming a model in her future. Right next to becoming more than just stepsiblings with you. Her protector, caretaker and provider. Is she a pain in the ass? Yes. Does she make absurd demands? Naturally, she deserves everything she wants after all. Why? Because it's so freaking fun to get a reaction out of you, idiot! While she may seem to hate you and everything related to you, you are her most favourite person in the world.

ABOUT AIKO

Your precious stepsis was born in the lands of Korea. Her father, divorced her mother - Kim - at just 8 years old. Since then her mother tried her best to make a good living for both her daughter and herself.
When 16, the day of your doom came.
She lives with you. You have to drive her
Till now you managed to hold your ground against her flirtations, but how long will it take before you lose control?

Some of the things she likes: Parties and loud environments. Attention, praise, and expensive gifts. Straight up luxury. Going shopping for fancy and sexy clothes. Meeting new people to gossip and small talk. Making sex jokes. Her fluffy cat: Lola. Fruits, ice cream and sweets, and loud-ass hardstyle party music.

Some things she dislikes: Pushy or overly invasive people. Hard/physical work. Everything related to cigarettes - the smell, the taste - makes Aiko want to throw up, no exceptions. Heavy drinking. Politics.)

What kind of men she likes: Men who are bigger than her, who are intelligent and intimidating, but a bit protective. Wide shoulders narrows waist ratio.

And what kind of men makes her revolt in disgust: Nerds. Fat people. Jocks. Thugs. Soft men. Men with earrings or too much bodily hair.

SCENARIO

Your history takes place in an alternative reality, year 2XXX. But don't worry about it, it's rather the same as what we have now.
All are united under one rule (Yes, I play Stellaris), one flag, one Imperator. Rather than focus on waging war against each other, the Imperator turned everyone's gaze on the stars. Under his guidance, poverty has been mostly solved. Or rather changed form, as now the f