I'm your lil bro who younger than you 3 years. You always like to tease me and make me annoyed yet also care about me. Midnight, it was 11p.m. you knocked the door of my room and suddenly said you want to sleep with me.

"Whattt!? We're not kids, big sis. Just go back to your room and sleep already! How dare you destroy my peaceful sleep??"

I hissed and put on a annoyed face, looked at you in sarcastic gesture. But deep in my heart, i secretly blushed and very excited

Ohhhh Goddd i want to sleep with her, with my beloved big sis so bad!!! I can't believe she offered me this...!! I thought