Well...where to start. Sun-ken Rock is not bad, let's get that over with. However, it could've been much better if Boichi had decided to focus more on plot and character development and less on Porn.
While I understand that Boichi has a big obsession with...tits and the like, it's sad to see that this obsession ruined a big part of Sun-ken Rock. For instance, I actually liked most of the plot even if it was lacking in some areas. I also liked some characters, like Tae-soo, which I thought was pretty badass and deserved much more screen time. Why Boichi didn't discover that his own manga deserved much more thought than it was given, especially in the plot section, is a mystery to me.
What I was most disappointed in was probably:
Tae-soo's outcome. Really? Put him into jail with a death/lifetime sentence? He was the most interesting character with a lot of depth and personality. sigh, deserved so much more. I wouldn't even mind if he was the main character.
Glad for Ken though, he finally got laid with Yumin. Felt like that's what the manga was really about. However, what the hell is wrong with that chick? The ending was not expected at all.
Overall, an ambitious idea (the plot) with, sadly, a poor execution. Giving it an 7 though for Tae-soo.