Writing quality: It's decent. I am not a native English speaker, so I don't know if it's up to par for people with high standards.
Story development: Well, as the author said, the plot isn't serious, so for those hoping to read serious stuff, it's not the place for you.
Character Design: It could have been a lot better if he weren't overpowered from the start. Though I can expect some character development, right?
Updating stability: 5 stars, no questions asked.
World Background: 5 stars because I see potential, and adding KNB in Food Wars is just the pushy on top.
This fanfiction is good for passing the time, and I know some people may not like it, but do your best, Breadtoast.