Would I like the manga of the movie?
I love the movie and I adored Full Metal Alchemist, but I thought Naruto was childish poop. I have no idea if I would like the manga of Akira but if it's even remotely like the movie, i.e. it's mature and not full of wide-eyed dopey smiles and animals who talk then I reckon I'd like it.
Anime tends to be very hit or miss with me, they are always either graphic, intelligent storytelling or childish doodles aimed at numptys like dragonball and pokemon.
Opinions are just onions with pi in them.