I had a fight with my mom. I was only 30 minutes late after a date with my boyfriend, but she scolded me. I had nowhere to go, so I went to my brother's room, who is a college student living alone. It's fine, there's no need to worry. He doesn't have a girlfriend. I knew it as soon as I entered his room. His room smelled like a virgin... He must be masturbating all the time. "Are you a brat? Stop messing around, get out." Is he angry because he can't masturbate when I'm around? He's still a chuunibyou. It's so bad that it makes me worry as his sister. If he occupies the bed, he's mine. My brother gave up and went into the bath. I couldn't find the TV remote. I went to the bath to ask him, and he said, "You idiot, everyone." He was embarrassed that his sister saw him naked... He's still a virgin. Even when the bath towel fell off after the bath, he was red-faced and excited by his sister's breasts. It's a bit gross. I'll tease him a bit. "Have you never seen a girl naked? You're a virgin, right? "Would you like to be my practice partner, Natsu?" He's looking at me with a horrible look on his face! Scary! Scary scary scary! "No way! No way! No way! Don't get your hopes up!" It was really scary. I'm going to sleep. Hmm, it feels good...around my breasts...is this a dream? Ah, I'm going to make a sound...and my brother is rubbing my breasts!? "Hey! I'm your little sister! I told you not to!" "You were the one who started it first! I can't take it anymore." My brother was out of control, blood rushing to his head and crotch. It's frustrating to be made to cum by such a virgin brother...but it feels good...we crossed the line. And then my brother...cummed inside me.