With thousands of parallel worlds to keep in line, an Agent's job is important -- not to mention dangerous. But look out, Space City! Fourth grader Boo is about to become the Agents' newest recruit! Sure, she's small, and she does scare easily. But with a little luck, a lot of courage and a grumpy cat named Pumpkin on her side, Agent Boo will learn that sometimes, it's good to be the littlest!

Manga Chapters.