Twenty years. That book was printed 20 years ago. Wow.
So, yeah, here we are, it’s not fresh, but it’s full of life, even now: Flattery Older Sister.
The manga is made of unrelated single chapters, save two small-sized arcs (3 and 2 chapters, respectively).
There are multiple story types; the first first of the volume is the disgusting type, made of domination, betrayal, everything happening at the hands of men only viewing women as cum dumps, and treating them as such (or, first, manipulating them till they’ve broken and have lost all form of self-esteem, of course).
After this, it’s a patchwork, you have wincest with love between siblings, brains-free happy sex, willingly consented chikan, happy orgies, a bit of everything, the main difference being, in my eyes, that women aren’t forced and broken anymore at least.
Graphically, it’s the best part, the art is fully uncensored, hardcore, intense, with tons of double penetrations and bukkake. Not gonna complain here 
That said, I frequently giggled at those “evil” combos: bukkake in the middle of double penetration, meaning the man under the girl gets his fair share of the gooey shower, ew 
It’s been released by Bientaimon, thank you! 
