Alright brothers, as I pick up on my doujin reading and hentai watching. I think another recommendation is in order. I was about 3 or 4 months behind and still picking up and one I will gladly recommend is Modaete yo adam kun.
Pretty much it's like a mix of 100 gfs and worlds end harem. Our MC is pretty much the ONLY GUY.. that can get his meat up because of the ED virus making everyone else impotent. So pretty much it's kept a secret and he finds himself pretty much slowly creating a harem of his own. Not to mention on Hanime it is uncensored. Hentai at its peak! There are some others but this one gets the notice, also over 42mins. Enjoy brothers. o7