My sister became a gal to change her gloomy, dull past. She's in a good mood because she's got a boyfriend, although he's not my type. She goes out excitedly on dates. If my sister is happy, I'm happy too. One day, my sister came back to our parents' house crying. She said that she was the only one who thought he was her boyfriend, and that he had scolded her, saying that she was just a sex friend who could have sex with him whenever she wanted. She wouldn't listen to what I had to say, and was always forceful during sex, using multiple toys, making me masturbate in front of her, and making me give her a blow job whenever I wanted. Thinking back, she had never been treated kindly.