It’s one of those “when the daughter cannot handle the boyfriend’s big dick, the mother steps in to restore the poor boy’s self-confidence” kind of mangas 
Gonza being Gonza, there are certain pleasant idiosyncrasies other mangakas didn’t provide, such as the care given to foreplay, the fine drawing details in every page, and the charming spontaneously sexual nature of the widowing MILF here. I can’t promise you’ll love it, but if you’ve already been exposed to some Gonza hentai and found it to your taste, then I can say it with confidence, Mama Lesson shall not disappoint 
It’s been releasd by Ish and the arasho Project, many thanks! 
By the same artist, I also share Kaa-san To Sex Ni Oboreru (200 pictures).
