(hah, I really don't know about this manga o_o" ...)
The first time I read a manga... I think it was Dragon Ball (I loooved so much the action scenes with all the blood *Ç*) or Mirumo... Mirumo was the first one I bought when I was wandering in a library, looking for a novel. When I saw the front page with all the colors, I couldn't resist to buy it ! >w<" ... But it was a sooo weird manga (I liked it anyway). o_o"