Ah, SWEET! 
Here’s a complete full-colour manga, 100% made of cheerful cute girls with thick eyebrows, wearing cute skimpy outfits, and having worries-free quality sex ^_^
There’s plenty of wincest (sister, cousin, you name it), childhood friends, friends, and colleagues, basically. You’ll have “only” oral and vaginal, but the art being this good, it’s all fine.
I mean it: practically each page is worth a new fap: HATS OFF!!! 
Doujin-Moe is behind the scanlation of the volume, my sincere thanks 
In case you have the vague impression you already saw Kaikan Gensoku on Hentairules: as a matter of fact, a million years ago 11 years ago, I had a share with the first half of the volume. Scratch that, now, today, this is the complete version!
