The story is really interesting and I like it. I enjoy the relationship between the grandpa and the MC; it is cute and funny. The problem I have is your writing. You have a nice writing style that know how to keep a reader reading. What the problem is, is the grammar. You have a few grammar mistakes that made me had to reread it little. And your first sentence in chapter one is a sentence fragment. But the grammar doesn’t kill the story. You have a good story here, keep up the good work!