[SONE-364] My sister, who actually liked me for a long time when I was dating the older sister of my childhood friend, went crazy with jealousy and seduced no bra boobs Mirei Uno

I have a childhood friend.
My sister is in the same grade as me.
My sister is three years younger
When I was little, I used to play with all three of us.
As I get older,
The opportunities to see her younger sister, Mirei, were decreasing
My sister confessed to me
I decided to start dating.
I went to the house to report to Mirei, but ...
That... Isn't it a blessing mode?
His face was twitching
Is it a feeling like you've been robbed of your sister?
----------------
If you are invited to your house again and visit ...
What!? Oh, oh, my boobs are about to overflow!
"Hey, Mirei, what's that outfit!"
"Isn't it cute? It's okay, it's a Mirein family."
Mirei appeared in extremely revealing clothes
- And she crosses her arms and brings her boobs close together
It's too blatant to look directly at ...
- That's right, Mirei liked me!
That's why he looked so suspicious.
Even though my sister is nearby,
- Show off your cleavage and seduce by pressing your boobs
I can't believe I had such precocious boobs ...
- Stealing her eyes and being ...
At first, I accepted it with all my heart.
Mirei's temptation only escalates ...
- She straddles the side where she is drunk and has cheating sex ...
Oh my gosh, oh my gosh! But I don't hate this thrill
Even though I know I'm betraying you
- Sex with Mirei was so pleasurable that I couldn't stop it