Zoku. Onee-chan ga Otouto no xxx na Osewa o Suru no wa Gimu nandesu

[MangaDex]

 

[MarvN]

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Scanlator's comment on sadpanda

 

[421cookies]

Where is the prequel?

 

[Neushaartje]

I think it was just yesterday when I was complaining how they often make only one of the characters cute for whatever reason, and why there isn't more where they make both so. Here it is, I would assume.

 

[DANDAN_THE_DANDAN]

I love lolicon and shotacon

 

[Neushaartje]

@421cookies

I found it here, which also has many more by the same author:

 

[Suck-a-duck]

I think it would’ve been cooler if Yuki was a futa.