I found this smut series on Ebook Japan's weekly free downloads last week. The story is fairly generic, but there was one thing about it that made it really special for me: the male lead is a yakuza member and he's covered in tattoos! This is the only smut manga I've ever read with sex scenes featuring a heavily tattooed man. Very sexy!
Read Online: Link Here!
Download: Link Here!
EDIT: I uploaded slightly larger files, hopefully they are a bit easier to read.