HUNT-850 I Live A Boring Life, Just Going To School And Back Home, But One Day, I Saw My Sister Showering! I Started Masturbating While Peeping... And To My Surprise, So Was She!

I Wanted To Secretly See My Sister's Friend's Shower Appearance Who Came To Stay At Our House, And When I Gently Walked To The Dressing Room... The Glass Was More Transparent Than I Imagined! Both nipples and man hair are clearly visible! Moreover, I was even masturbating! Unexpectedly looking through the glass, my sister friend opened the door and Morobare! And suddenly approached me not to tell anyone that I was masturbating!