Futaba-san Chi no Kyoudai - Vol. 3 Ch. 20 - The Futaba Household's Convention

[MangaDex]

 

[firosahoge]

uwaaaa~ i think oto-kun wants the incest more than the sister. He was ready to actually kiss her but she stopped him with a finger... those mags were the last straw, it's confirmed!

 

[BrunoVilla]

You're right Oto-kun, it's not incest.

IT'S WINCEST

 

[MrGreenFR]

Ha yes : quality hent... I mean manga of culture my man Oto Kun OwO
Blessed indeed! Onee san type of girl are the best!

 

[MesaOracle]

She just flipped thru the porn and said he doesn't need them because she would do it all for him. Wincest confirmed.

 

[aerozext]

I only lasted for a half-day...
And it’s not even the summer one :x

 

[Mivy]

She is a keeper for sure

 

[knight_evangel]

lul manga always make comiket look like a decent non-life threatening experience instead of something like a slower-paced Black Friday in a States city's Walmart.