The Hero Has Many Flaws

After an unfortunate event at school I was reincarnated into my old body in a new world, who knew that I would die after getting a hit to the gut? Well no wonder I died, my body was at wit's end anyways, as a Fat and Unfit guy I have to survive in the new world that I got reincarnated in, no matter what. I have no idea what kind of things will await me.