Mine is Berserk, it's really awesome and immersive. Also, it motivates me to work-out and live my life to the fullest. If you write your favorite manga, please add an explanation why it is your favorite.
My favorite manga is citrus. I love the main characters because they are so cute. I don't how it become to be as one my favorite manga, i just suddenly felt it as I read it over and over. Today, they are now making an anime of it so I feel really happy.