One of my favorite manga's so far. Sun-ken rock is a manga that gives good balance, with action/comedy/ecchi and a very great story behind it surprisingly. Also the story brings great character the developments along the way, with great resolve coming from the main character Ken. All in all without giving to much of spoilers this is a story about a guy who falls for a girl that he would do anything for even if he has to become a gang leader knowing shes a cop. Which brings some good comedy and suspense with big surprises and not knowing what will happen next in upcoming chapters. The Art is very good, great detail with character body physique and face expression. Also with how detailed the city is that the manga takes place in. I would give this Manga a 10/10 because of how balanced the story is and how much motivation i get from the main character and his resolve to train his body and protect the ones he loves.