My Sister

The English teacher called and asked if I was my sister, and I said no. Then my sister came over later and said, 'You should have said you were sleeping, don't you have any sense?' and then went to her room saying, 'Ah, I didn't want to go to cram school...' I thought, 'Why is she like this?' So today, I asked the English teacher where my sister was. I said she was home all day and that she went to a study cafe. The teacher said, 'This kid, haha.' I even added that she was home all day on purpose lolololol