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Shimai Soukan ~Kindan no Kakeizu~

姉妹相姦~禁断の家計図~

TitleShimai Soukan ~Kindan no Kakeizu~
Original title姉妹相姦~禁断の家計図~
LengthShort (2 - 10 hours)
DeveloperAnalog Factory & Momiji
PublishersAnalog Factory & Momiji

Description

Shunsuke Kobayashi live with his imouto Mayu at their parents home, while his elder sister Natsumi live with his husband, the rich heir Kimishima Yohey and Yohey younger sister Yoko.
Indebted after the death of both parents in an accident, Shunsuke and Mayu where asked to move to Yohei mansion, Natsumi seem to be worried for that but Shunsuke accept and move in with the help of his girlfriend and classmate, the fatherless Yuki Kawai; at the dinner Yohei tell everyone "Never enter to the room at the ground", but it's clearly a invite to enter.
And in the evening Shunsuke hear moaning from that room; "That's normal because Yohei and Natsume are married" but he can't restrain to peek and see Yohei having sex with his own sister Yoko.
In that moment Natsume came from the back and introduce Shunsuke to the room and undress; but Yohei treat Natsume like a toy, having her masturbate, drink his pee and give a blowjob to the terrified Shunsuke.
It seem that Natsume in past gave sex services in a soapland to pay same debt, and there killed a man that was threatening her, Yohei blackmailed and married her, and turned her in to a masochist, also that man she killed was....
Now Yohei want to involve Shunsuke as his companion in this crazy sex life.

Releases

Japanese
2002-07-1218+Jitsu Shimai ~Nureta Soukanzu~
2005-06-2418+Shimai Soukan ~Kindan no Kakeizu~
2012-06-1518+Shimai Soukan ~Kindan no Kakeizu~ Download Edition

Full character list

Character summary

Main characterKawai Yuki
Voiced by Isama Kazu
Main characterKimishima Natsumi
Voiced by Nakano Shino
Main characterKimishima Youhei
Main characterKimishima Youko
Main characterKobayashi Mayu
Voiced by Andou Ryuu

User stats

Vote stats
6 votes total, average 7.33 (good)
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Recent votes(show all)
hidden72017-06-03
effinhammer82016-10-21
hidden92015-06-14
hidden72014-12-15
hidden62014-07-22
davidlu983772011-06-29

Ranking

Popularity: ranked #8245 with a score of 0.18

Bayesian rating: ranked #5451 with a rating of 6.40