You got to be crazy not to enjoy Sun-Ken Rock or a child or even just a parent who doesn't like explicit things. This is by far in my top five of my favorite mangas and only the purest of eyes should be able to read Sun-Ken Rock if it was up to me,but luckily for you its not the story was magnificent I had to have read every single chapter in a 2 day span of time because of my infatuation with the plot. The art was so focused and centered but still so different that I was happy to use some styles even in my own drawings. Seinen will always be my favorite though and I will always hold the upmost biased opinion about every Seinen manga but trust me if this was truly bad I wouldn't even waste my time reading it in the first place. If you're looking for a great read and ran out of interesting manga you gotta read this for sure.
Sincerely,
KichtheKid