Tsuki Ga Noboru [English, Complete with both Zenpen + Kouhen parts], by Rocket Monkey
In short, a highschool girl, tall, playing volleyball, cheats on her boyfriend with her coach, because she asked him how to please a boy (she thought of her boyfriend), and became his sexfriend, at first because of blackmail, and soon enough, because she loved her daily dose of cheating dick, and to hell with the boyfriend.
I may have various reasons to tag a share as “facepalm”, but in the present case it boils down to the caricatural setup in which the girl is so dumb she brought everything on herself. Although, and in that I think we can praise the mangaka, the girl was not broken, she still had freedom of will, and made her own choice in the end, so, eh, maybe I shouldn’t bitch and whine too much ┐( ̄ヮ ̄)┌
SureOK1 and L9910 are behind this release, thank you!
For more, please see The list of Rocket Monkey’s works on HentaiRules…
A note I add just before publishing the post on my blog… You know what’s actually disappointed me with this release? Not the story. Not the censorship (well, I mean, yes the censorship, who could love that, but that’s not the topic). For me, that was the feeble attempt made by the mangaka to make us rage. Throwing us a cucked boyfriend like you’d throw a bone to a dog. That was weak. That was underhanded. That was a poor job. We deserve better rage materials, lol.
One last warning maybe, in case you managed not to notice yet: the censorship is blasphemous full whiteout, I’d suggest you check with the gallery first to tell if you love it enough, before you (possibly) want to download the zip on your disk
And now, the download & gallery links 
Open the Complete Pictures Gallery
Download the Free Hentai Manga in a Zip file
(45 MB, 56 pictures, English)
Or you can also use the Alternative:
Zip Mirror #1 – or – Zip Mirror #2
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Honestly, with a face like that, poor boyfriend-kun had zero chances anyway.
Lunar face=Moon face
Also, the gallery goes to a Touhou doujin.
Moon face? Duly noted, and stored in memory. Thanks A-M
About the gallery, I’ll copy-paste another comment I wrote: Indeed it did. I fixed it this a few hours ago but lacked the spare time to respond to comments reporting it, thank you
I wish he/she would do more like Egg or Chicken
Same.
But if the mangaka must do netorare/netori, shit, at least, I want quality materials, making us rage, stirring aspirations to bloody violence within us. Not something weak like that.
Wasn’t that simple, kinda life like, shit like cheating? There was no magic dick powers compelling the girl to be a shit. Just her own lust.
Coach is a douchebag, true. But it was her who returned for more, ditching the poor shota-boi to indulge in dicking from coach.
Like you said, it was her choice and while I disrespect her for this … this doesn’t seem like NTR crap for me. Girl didn’t love the boi-toi. Simple like that.
The gallery link leads to another manga.
Indeed it did. I fixed it this a few hours ago but lacked the spare time to respond to comments reporting it, thank you
Didn’t know if I was watching hentai sex or bronco busting.
Well, the internet being the internet, there’s certainly a combination of the two in some dark corners of the web…