Coming home hungry, I found my parents were out and decided to sneak into my sister's room. There, I caught her lounging with her panties pulled aside. When I called out, she snapped angrily, "Why did you barge in without permission!" I replied, "I'm hungry, so make me something to eat." She shot back, "Your attitude is so annoying!" and attacked me with a cushion, kicking and knocking me down. Then, as I complained, "Why do I always have to cook?" she stomped on my crotch. With my arm injured and movement limited, I thought she'd finally have a chance to get back at me. But instead, she grabbed both my legs, grumbling, and firmly set up the deadly electric massage device. Under her relentless electric massage, I was involuntarily brought to climax against my will. She had intended to crush my balls, but seeing me ejaculate uncontrollably, she burst into laughter: "Huh? Wait, seriously? Big brother just came from electric massage? No way, that's impossible!" It was an intensely humiliating moment. The electric massage punishment for her normally domineering brother continues relentlessly. With the power completely reversed, the sister now taunts, "I'll stop only if you repeat exactly what Yuuna says from start to finish, okay?" The brother, forced to obey, recites: "Big broooother, I disgracefully came from my little sister's electric massage! Say it with me now, come oooon!" ※ Facial exposure in main video