During my student days, I could never measure up to my older brother in academics, sports, or love. Tormented by feelings of inferiority, I would press my ear against the wall every time I heard my brother and Mayuki having sex in the next room, secretly listening to her moans while masturbating. Mayuki was supposed to be my brother's girlfriend, yet I was secretly in love with her—a feeling that still lingers in my heart. My brother and Mayuki eventually married and lived together happily. But due to work, I came to stay at their place in Tokyo. Mayuki seemed down, and their marriage had grown stale. Despite knowing I was visiting, my brother claimed he had a work drinking party and left me in Mayuki's care before heading out. How could he treat her so carelessly? Was she hurt by his indifference? Could I finally make love to her? Or would it betray my brother? Was it his fault that she felt so lonely? Was it loneliness? Desire? The real sight and sound of Mayuki—the breasts, pussy, and moans I'd only imagined through walls—was now right before me. I couldn't resist the temptation. I took her. This incredible woman, Mayuki, unlike any I'd ever had. Mayuki, Mayuki, Mayuki... All the emotions I'd suppressed came flooding out, unstoppable, uncontrollable. The only thing I've ever surpassed my brother in is my love for Mayuki. The next morning, my brother returned home. An awkward tension hung in the air. He had to go to work, but said, "Since you're here anyway, why don't you take Mayuki and enjoy Tokyo before heading back?" Then he left, dumping me on her once again. Instead of sightseeing, we headed straight to a love hotel. Mayuki had always had a strong sex drive—back in the day, I'd heard them having sex countless times through the wall. For her, sex was the ultimate expression of love. Now, in place of my brother, I'll give Mayuki all the love she's been missing.