Summary
Mio and Hibiki Shiina are step-siblings.
Hibiki began attending college the year after Mio left home. Seeing as Mio's apartment is close to campus, they began living together.
It's been about half a year since then.
One evening, Mio's boyfriend canceled last minute on her.
When she arrived home, she discovered her brother using her underwear to pleasure himself...
She doesn't recognize this person...
Read on as their relationship changes from "siblings" to something more!
88 main pages + 1 cover + 1 afterword
90 pages total
* Unlike the sample images, the actual pages use white bar censoring.
* This work depicts cheating, as the main character has a boyfriend.
Twitter:
https://twitter.com/hanyonmll
Hibiki began attending college the year after Mio left home. Seeing as Mio's apartment is close to campus, they began living together.
It's been about half a year since then.
One evening, Mio's boyfriend canceled last minute on her.
When she arrived home, she discovered her brother using her underwear to pleasure himself...
She doesn't recognize this person...
Read on as their relationship changes from "siblings" to something more!
88 main pages + 1 cover + 1 afterword
90 pages total
* Unlike the sample images, the actual pages use white bar censoring.
* This work depicts cheating, as the main character has a boyfriend.
Twitter:
https://twitter.com/hanyonmll
Characters
![【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]](//img.dlsite.jp/modpub/images2/parts/RJ351000/RJ350951/d27d4cec2bee2061123bb3c4c5dd7d5f.jpg "【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]")
[Mio Shiina / 25]
Began living by herself a year ago, but after becoming swamped with work, she was unable to complete even the most basic of chores, leaving both her home and herself a mess.
Thanks to support from Hibiki, she's finally leading a more human existence.
She has a boyfriend who she never sees, thanks to him always canceling plans last minute.
Due to her good-natured personality, she is frequently taken advantage of.![【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]](//img.dlsite.jp/modpub/images2/parts/RJ351000/RJ350951/0800ebb50216b370645250098cfb29fd.jpg "【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]")
[Hibiki Shiina / 19]
First-year college student.
Mature for his age.
His father married Mio's mother, making him her younger brother.
It seems as though his hobby has become sticking his nose into Mio's business.
He's also got a secret he dares not tell anyone...
![【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]](http://img.dlsite.jp/modpub/images2/parts/RJ351000/RJ350951/d27d4cec2bee2061123bb3c4c5dd7d5f.jpg "【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]")
![【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]](http://img.dlsite.jp/modpub/images2/parts/RJ351000/RJ350951/0800ebb50216b370645250098cfb29fd.jpg "【簡体中文版】こんな弟、知らない～しっかり者で、優しくて。姉想いな(義)弟は私のことが大好きな変態でした～ [Traductores Unidos]")
