Thanks for the translation! I wish it was in color too, but the artwork is always topnotch! This one is also part of the series, but don't know here it fits https://e-hentai.org/g/2904010/08d5604a96/
@asssssakurrra I'm hoping the fact that the author gave MC an actual character this time means hes not planning to go the shota NTR route that the original versions did
The way it fits is that in that part she is 34 years, here she is 29, and probably hasn't interacted with her nephew at this point.
Also the author is a woman, and she likes cute/nostalgic shota stories, there is one coming up with 3 boys but with another lady. So it might take a while for the Anna x shota sequel.