A daily life filled with naughty things at the request of a serious younger sister, sent to someone who loves younger sisters!
[story]
My younger sister Mika is a serious high school girl with large breasts who is about to take her entrance exam.
Then Mika suddenly asked me, her older brother, to do something naughty.
Apparently, she has to do naughty things with her brother to earn OP (brother points) in order to get secret points.
Okay. I’m going to do naughty things every day for my real sister!
It’s bad for brothers and sisters to have sex, but it can’t be helped if a penis accidentally enters them!
Number of pages: 67 pages (+ 67 pages version without dialogue)
Bonus CG (pictures before frames): 105 pieces
*This work uses AI-generated images by Stable Diffusion.
