“Kin” Totta Node Sex Kaikin Shimasu [English, Full colour, 55 pictures], by Hatsui Tsumo
I liked this story, and felt like sharing it ASAP, hehe. It’s about two badmington athletes, partners for ten whole years but never lovers, who finally became world champions and can finally be honest about how much they like each other.
Not everything is awesome here: the art is good without being exceptional, there’s horrible blur mosaics censorship, and the story line is basic without any particular developement. But, still, there was a nice flow, and the drawings style appealed to me, somehow ^^
Thanks to whoever has released it!
And now, the download & gallery links 
Open the Complete Pictures Gallery
Download the Free Hentai Manga in a Zip file
(22 MB, 55 pictures, English)
I allowed myself to very slightly recompress the images before sharing. You won’t notice any difference with the naked eye, but now it’s only 22 MB instead of 95 MB =)
Or you can also use the Alternative:
Zip Mirror #1 – or – Zip Mirror #2 – or – Zip Mirror #3
Pleasant enough I suppose; although perhaps another time, place and artist might have crafted the scenario where it was Tobimatsu who went ahead and had sex with someone during the 10 years of “none of that stuff” between herself and Okudera.
And one might venture to ask: now that the restraints are off, what will happen now, apart from hot steamy sexy time?
One or more answers are needed, …

No shuttlecocks were harmed during the making of this hentai.
Oh god I had not understood at first ^^;;