Wagaya No Setsuden Taisaku (“One Family’s Plan To Save Electricity”) [English], by N.O. Chachamaru (AKA Heisei Chachamaru Dou)
What the fuck, this hentai manga doesn’t make sense. Not because a mother and her son are fuckbuddies, that’s hardly worth lifting an eyebrow in hentai. No: because we’re in the peak of a summer heat wave, the A/C is not an option, and they decide to have sex to cool themselves and feel fresher O_o
The story is not worth mentioning, however the art struck me as unique, original, outside of the usual releases material. The woman’s plump and drawn very crudely, with very little censorship, and there was this impression of watching a pencil drawing (something that becomes rarer now that everyone’s using a computer/tablet to draw).
Maybe you’ll like it, thanks a lot to Amoskandy and Hentaieyebr!
And now, the download & gallery links 
Open the Complete Pictures Gallery
Download the Free Hentai Manga in a Zip file
(20 MB, 30 pictures, English)
Or you can also use the Alternative:
Zip Mirror #1 – or – Zip Mirror #2 – or – Zip Mirror #3
It’s like charcoal, watercolors, and pencils had a menage a trois; and this was the mess they left behind on the bedsheets.