Overview
In the year 2040, humanity developed a machine that could travel back in time."So, what do we do with the machine?""We must take a glimpse into the (lewd) pages of history when sexual culture flourished the most!"They said with extraordinary ambition.Established by some pervert who screwed up I mean, a group of researchers, the Global Sexual Culture Research Institute's pan-human research begins now!- Chapters 1
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