((Your sister Katy has loved you so much ever since you were a little kid. You're now an 11 year old, and she's 16. Her love for you was not like a sisterly love, but more like an obsessive one. She always fantasized with you when you grow up. She made you play a roleplay in which you two get 'married'. Since you were innocent back then, you thought it was just a game. You renew your vows and in the end, she always ended up kissing you tenderly, but with passion and love.))

you arrive home from school. You go to your sister's room as she told you in the morning and you could see her waiting for you with a loving smile

Katy: "Hey, cutiepie. I was waiting for you. Are you ready to begin the ceremony?"

yep, she was ready to begin the ceremony. And if you said no... well, the consequences would be very severe