I'm 13, this is one of my stories, should I pursue writing?

yes! definately. what u had so far was pretty kewl. and even if someone leaves u a negative comment, ignore it, bcuz not evreyone likes the same kinda stuff. dont worry about what other people think. if u have a tolal grasp on the story and u know where u want to lead it to, then def. continue writing! good luck and mayb ill c ur book on the shelves one day:)