My sister, who lives with me, is a career woman working at a major trading company. Although she's serious about her job, she's incredibly sloppy at home! Every day, she drinks alcohol in a half-undressed shirt, a shameful sight! I don't know where to look when I see her like that. When I point it out, she mocks me by saying, 'Is this too stimulating for you, virgin boy?' However, seeing my erection, my sister gives a lewd expression and says, 'Taking my little brother's first time... This is kind of a perverted situation.'
