This is gonna be my first review, so don't expect a good one.
Kaikan Gensoku is about random H scenes in one book made by Manabe Abu. Since I read it untranslated, I can't understand most of the dialogues. Either way, plots for each stories are pretty much random.
For the random stories, they are have simple plot, but nothing stands out. Each chapter are too short and ends about 5-8 pages.
Artwork is bland and it lacks sex appeal. The face for each girl is basically the same, with hair, clothes, and body build as distinctive features.
I can't seem to remember any character (of course because they
all looked bland and I didn't even know what they are talking about).
Overall I don't really like this one as it lacks sex appeal. I won't suggest you for reading this book.