https://book.dmm.co.jp/detail/b164aisis01539/

怒涛の第二部、美人姉妹編・完結！！
謎の隣人・斎藤の『催淫術』にかかり、夢だと思わせて性奴に落とされた姉妹。
妹、沙耶は現実の出来事だと気づき、姉の楓にふたりの身の危険を訴える。
興奮する沙耶に楓は飲み物を与え落ち着かせようとする。
沙耶は液体を口に含むと同時に気を失い、目を覚ますと裸になっている自分がいた。
そして、目の前には斎藤のイチモツを嬉しそうに頬張る楓の姿が…！？

太棒了，感谢分享

Great!!!Thx for sharing.

Base +6, sedawe +6

Wait, so he just uses an upgraded camera? He doesn't even mindbreak the younger sister?

Base +6

没想到催眠术还有招大喇叭（错乱

Base +6, xuanhbf +6, Reisenex +6, W G +6

The older sister seems to claim that it is her own free will after she have sex with him claiming how wonderful it is.

Base +7

用這個…佈景燈?
亮度是變強了，但對著人閃一次幾乎都要過一小段時間才能恢復視力吧？
這樣能用閃爍催眠人嗎?(先不論閃爍能否催眠人這件事)

Base +8

I have big doubts regarding "post as in the source" when seeing those areas on left and right of pages.
Probably easily replaced with a superior version.

Base +28

@ Supeskupes
The upgraded flash only control the body[albeit no time limit like its predecessor] while left the consciousness as is.
So it wasn't that he didn't mind broke her, he is on the job of doing so in this book.
The author didn't show any of the ypunger sister's thoughts while getting raped though, which is a minus.

The author should have leave the big sis out of the final hypno tbh, as she is already the pig's slave through and through so the hypno only make it worse as it rid her expressions out.

Base +7