You realize you need a pee, so you get up to go to the bathroom. You forget your boxers are loose so don't hold them up, and they slip down as you start walking, revealing your now quite shrunken manhood. Emma laughs on seeing her brother naked, albeit now her younger brother. You don’t bother picking your boxers up. After all, Emma's now seen you naked, so you carry on walking to the bathroom. Besides, you don't feel you've got much to hide now.
You return a few minutes later, still naked, and sit on the bed next to Emma. You're still quite confused and shell-shocked about what has happened, and wondering what you can do about it. Emma is flabbergasted that you stayed naked, and decides to comfort you, putting her arm around you.
Her touch is quite gentle, and you feel a little better with the reassurance of your sibling. However, she finds your bare skin quite intriguing. She runs her fingers over your now-smooth chest, marveling at the absence of hair. "Looks like you're my little brother now,” she teases, her voice filled with a mischievous glee. She tickles your ribs, and you can't help but giggle like you used to when she'd do it as a kid. The sound is high-pitched and unfamiliar, and it makes her laugh even harder.
You can't be bothered to resist her touching you, and you lie back on the bed, trying to make some sense of what's happened. Emma picks up your right foot and tickles your bare sole and toes. You can't help but laugh and try to pull your foot away, but Emma has a strong grip. She stops and begins to kiss your bare foot. You jerk in surprise, the sensation sending a jolt through your body that you weren't expecting. It's innocent, but it feels strange. She giggles, her cheeks flushing slightly. "I used to love tickling your feet when we were little," she says, her voice a mix of nostalgia and something else. You can't quite place it, but it makes your heart beat a little faster.
Before you can protest, she takes your right foot in her hands, her grip surprisingly firm, and lifts it to her mouth. Your eyes widen in surprise as she wraps her lips around your big toe, and starts sucking on it. The sensation sending a jolt of pleasure through you that you never knew was possible. You let out a gasp, your body tensing.
She continues to suck, and then kiss and nibble on your toes, and you notice a change in your body's response, from the nonchalance of not really caring what she's doing to feeling something inside - a warmth spreading from your stomach - and you can feel your young manhood begin to stir. You try to ignore it, telling yourself it's just your body reacting to the sensation, but the more Emma kisses your foot, the more intense the feeling is. You squirm on the bed, trying to keep your cool, but it's no use. You're starting to get harder, and there's nothing you can do to stop it.