Nana-chan has a rather feminine expression-- and yet she shows a childish smile as she put more strength into her hands.
"Onii-san, Nana will definitely make you *** because Nana wants to see it"
"Uuu, you, you want to see, what....?"
"Honestly, Nana wants to see onii-san's miserable face when you ***. The man in the eroge manga was extremely delighted when he was being bullied by a young girl like Nana"
I'm not that of a masochist!!!.... But, but the thing is Nana-chan completely dominated me, and in response to the pain that could bend one body, a feeling of wanting to *** in the hand of Nana-chan was growing inside my mind.
But if I *** here then 50 thousand yen would turn into nothingness!!!! at best I could do for now is to finish under Nana-chan's handjob so that I could enjoy the best moment of my life being serviced by the shop's greatest prostitute.
I try my best to shake my head to discourage Nana-chan, but Nana-chan then displays a bewitching smile on her face as her hand gets stronger than before.
"To tell you the truth, Nana really wants to put that rod of yours into Nana's **** but it's not possible right now....so right now, Nana could at least do something a bit similar to that with onii-san!"
Nana-chan use the hot towel that she has been prepared while I was gone, coil it around my rod, and tightly grasped it.
Of course, it was different compare to intravaginal. But the unique feeling of that was enough to urge my desire to ***.
"It's no use holding back now, onii-san because it's Nana's job to control you whenever you *** after all. Even Akira-chan, Asari-chan, Youko-chan, ....even my sister, Makoto-chan, I won't let any single one of them touch your se*** ever again. And even my mother as well..."
There is only darkness of the abyss that resides in her eyes just like those in eroge manga... and this is the first time Nana-chan has addressed someone without an honorific title and Nana-chan has completely viewed everyone except me as a rival.
"Onii-san is a lolicon, isn't that true? making young girls go deep into a bathroom just to satisfy onii-san... you are really a hopeless pervert, aren't you?...Now, hurry up and *** out ... those sticky, white mucus" (1)
Nana-chan threatened me with that wicked, sinister smile while rubbing my rod tightly against the hot tower with both of her hands and yet I feel stimulated when I look at Nana-chan's face. Have I really turned into a lolicon?!
Normally I would have *** till there's nothing left without any hesitation... but for today... only today!!! I won't let this premium chance go to waste!
"Nana knows...that onii-san want to have s*x... with another girl around your age... onii-san want to *** out your precious baby materials to someone like that... That's why Nana will never forgive you!!!"
At that moment, I was able to shake off my desire to be dominated by Nana-chan...So I lift her up as if I was lifting a puppet and then run out of the box with all my might.
"I'm so sorry, Nana-chan!!! I can't gain that wish of yours for today!!!"

"It's all right, onii-san. Nana will wait for you until the end of time, because onii-san, you won't be able to escape from Nana after all. *giggle*"

(1). 「おにーさんはロリコンさんなんだよね？よーじょにしかよくじょーできないびょーきにかかってる‥‥ぜつぼーてきなへんたいさんなんだもんね？‥‥さぁはやく出してよ‥‥赤ちゃんの素」

p/s: I don't really know how to translate this as I can only make out some of its parts and it's rather hard to understand what Nana trying to say so if you have any idea, I'm all ears.

To be honest, there's something in Japanese that I couldn't translate it properly to English so forgive me if I made any mistake as English is not my primary language. So then, thank you for reading this rough translation of mine.