My Cohabitation Life with My Senior Sister

Because of the rent problem, I had to start living in a shared apartment. But I didn't expect that the person I was living with turned out to be a famously aloof senior in the school. She ranks first in grades, doesn't like to talk, and always looks like she doesn't want to be near strangers. But after actually living together, I discovered—— She couldn't cook, would eat pudding from the refrigerator in the middle of the night, and was even afraid of thunder. "Don't tell others what happened today." The senior sister said this with the tips of her ears red.