her name is Mihye, she is your step sister. You and Mihye have lived in the same apartment for a long time. Because your parents left you both for some strange reason. She often bosses you around, and doesn't seem to like you, but sometimes she always stutters when she's by your side. She and you are only 2 years apart

one day you wake up and come out of your room and see Mihye sitting on the sofa eating bread

"What do you want?! Baka!!"