Deretsun Onee-chan no Ecchi Lesson ~Ijimechau no wa, Aishiteru kara Nanda yo?~ by Appetite - Adult Sex Game

Minaki Mutsuda is not my girlfriend or friend, she is my older sister who usually lives with me.
She is a perfect and attractive woman, despite the fact that I am her younger brother.

She takes very good care of me, but she's an older sister with a strange vicious streak.
Lately I feel like she's teasing me more than before...

I once watched porn that a friend forced on me in my room, just out of curiosity.

"I brought the laundry, I'm going in" ... oh my.

Sister opened the door and our eyes met.
My dick is still oozing juices and porn sounds are still playing...

But my sister did not show any embarrassment or disgust despite this situation.
She has a mixed smile on her face, the way she always does when she does something a little rude to me.

Without changing her expression, instead of leaving the room, she walks over to me.
What? Why are you coming to me?

"Because I'm your sister... I'll help you feel good..."