Quote from theLettuceGarden04
I do not like any shounen-ai or yaoi, if there is a little hint of it I stop reading straightaway. I also don't read shounen and rarely seinen. And oh, no ecchi (well a little is okay I guess) and I also don't like manhwas in general (except of Flowers of Evil). Please persuade me any good ones ...
I don't have a good track record with mature seinen, but other seinen can be quite enjoyable. Since it's a genre that is focused on men, you might be surprised as to what shounen and seinen can actually offer. My favorite manga is actually Yotsubato! and it's shounen. I also like Stray little devil and angel densetsu which are shounen as well. My favorite seinen have got to be: Girl friends, Ichigo mashimaro, Poor poor lips, Hotel, Octave, Candy boy, hayate x blade, and sasameki koto. Try'em out sometime.