https://www.dlsite.com/books/work/=/product_id/BJ009293.html
As always, please support the artist and buy his works.

Mother-Daughter Life Rape

Omuta, a dull middle-aged man working at a convenience store, is confronted by Aiko Kiryu, junior high school classmate and the object of his admiration.
Although she had a child, her beauty and strength of spirit had not diminished at all.
Faced with Aiko's scornful attitude, Omuta's dark desires begin to run wild...

The first fully digitally written work by Ippei Ikoma, a leading figure in the world of erotic manga!