1. Oyasumi Sex (おやすみせっくす); 2014/5/5 
2. Oyasumi Sex am2:00 (おやすみせっくすam2:00); 2014/8/17 
3. Oyasumi Sex am3:00 (おやすみせっくすam3:00); 2014/12/30 
4. Oyasumi Sex am1:30 (おやすみせっくすam1:30); 2015/5/5 
5. Oyasumi Sex am4:00 (おやすみせっくすam4:00); 2015/8/16 
6. Oyasumi Sex am4:30 (おやすみせっくすam4:30); 2015/8/16 
7. Oyasumi Sex am10:00 (おやすみせっくすam10:00); 2023/3/2 
 
Oyasumi Sex: Soushuuhen (おやすみせっくす総集編); 2016-12-31 
8. Natsuyasumi Sex (なつやすみせっくす)

Since our parents divorced, I spent more time with my younger sister. For me, Yui is still like a little baby. I have to be able to replace the position as a father and take care of Yui. However, over time, I feel insane. Every night I do something pervert to my own sister when she sleeps. I understand we are siblings, but I can't help it.... 
 
(Source: Translated and Edited from Nekopoi)

1. Kako Kaisou: Hajimete no Fella (過去回想〜初めてのフェラ〜) 
2. Oyasumi Deepthroat (おやすみディープスロート); Comiket 91 
3. Ohayou Sex (おはようせっくす); Comiket 89 
4. Ohayou Sex Bangai-hen (おはようせっくす番外編); Comiket 91 
5. Odekake Sex (おでかけせっくす); Comiket 90 
6. Odekake Sex Bangai-hen (おでかけせっくす番外編); Comiket 90 
7. our way home 
 
Note: Chapter 8 exclusive to the Special Edition; Odekake Sex Soushuuhen Tokusouban (おでかけせっくす総集編特装版)

An older brother and Vampire Aki and his younger half-blood Vampira sister Yura. 
These two long-lived creatures of the night have been hiding together in a forest for 80 years. 
Aki usually feeds on the beasts of the forest, but he is unable to find food for an extended period of time and Yura decides to let him suck her blood. However, the first time Aki sucks the blood of something other than a beast, he becomes horny with lust and rapes his younger sister. 
The two pretend that that it never happened. 
But the passion of that night was unforgettable. 
Unable to drink any blood, Yura notices that her brother is growing weaker and weaker, and suggests that he bite her again. Saying that she wouldn't mind even if he ended up raping her... 
"If I suck your blood again, I will surely do something even worse this time." he replies. 
An older brother and younger sister who have supported each other for decades... 
Such a gentle, gentle brother he is... 
But that night, he bites... and bites again... and cums... and cums again... and again... and again. 
 
(Source: Dlsite)

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