What happens when a horny brother and sister have lots and lots of creampie sex!?
 
Well, little sister Yui had her brother's baby, that's what happened. 
Now, she's too busy taking care of the baby to take care of her sexual needs! 
However, her parents arrange for her and big brother to go on a honeymoon trip! 
It's time for some more nonstop sex!
 
A 100% pure older brother & younger sister book that thinks seriously about what happens when a horny brother and sister have lots and lots of creampie sex!
 
(Source: DLsite, official)

A pair of siblings are so friendly with one another it's as if they are a newlywed couple. 
It just so happens that the older brother has been fapping off to Yui for quite some time now. 
However, one day, due to a certain turn of events, the siblings find out that their love for one another is requited and...!?
 
(Source: DLsite, official)

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