Found this in an advertisement. What manga/artist is this?
It's an OVA called Namanaka 100%!: Katamusubi no Shinpa. (Japanese: 生膣ひゃくぱぁせんと! 固結びのシンパ)
Creator is あかざわRED
Artist's pixiv: http://www.pixiv.net/member.php?id=10340
Artist's commercial work history:
https://under80com.wixsite.com/akzw/blank-5
He seems to like futaba memes too.