Last summer, my brother Hirohito came and lived with me out of my studio apartment in downtown Tokyo.
The apartment was an open industrial space. Just a large open room that I subdivided with Japanese/oriental style block standing screens. I broke the big warehouse space into a general living area and two bedrooms. But it was all one big open area.
My peeking on my brother began one night when I was up in bed having a hot restless sweaty night of no sleep.
I heard this gentle tapping rhythm coming from my brother's direction. I immediately knew what he was doing.
'Boys will be boys,' I thought to myself.
I pondered if I should say something, but it seemed taboo to say anything and acknowledge the situation we were in. I thought better of this idea and stayed silent.
I listened over the next couple of minutes as my little brother orgasmed and the tapping rhythm ended.
The next night I layed in bed unable to fall asleep again.
And again, the same tapping rhythm from my brother's direction.
I quietly slipped out of bed and put on light slippers that muffled my steps.
I looked from the shadows behind the curtain. I could just make out the faint outline of my little brother, shirtless, stroking himself.
I was taken aback by how big and in shape my little brother was. I don't remember him being like that. I guess he has started working out.
I watched Hirohito finish all over his muscular stomach in silence.
He then wiped himself clean with a sock.
(I've never thought about this before, but I guess men need a towel or napkins, or a sock, to wipe their cocks clean after masturbating. I guess I take it for granted that I can masterbate however, wherever, without mess).
Hirohito turned over, and I slunk over to my bed and fell asleep.
The sound of downtown Tokyo faint in the background, I fell asleep...
From then on, through the summer, every night I would lay in bed unable to fall asleep, and listen to my brother masturbate.
Every once in a while I would summon the energy to sneak out of bed and observe him, but most of the time I just listened.
One day I decided to conduct an experiment. Before I left for work, I left a pair of my used dirty panties out in the space that was his bedroom; casually, like they fell out of a laundry hamper or something.
When I returned from work the panties were gone.
That night I heard the steady rhythm of my brother.
Again, I slipped out of my bed and observed him from the shadows.
My brother had my panties wrapped around his cock as he stroked himself through them.
My panties seemed tiny around him and in his hands.