Jimmy is in high school, but he's already a famous detective, solving cases all around Japan. He gets into trouble with some thugs, who force him to take a mysterious chemical that changes him into a child. He's still solving mysteries, but no one will listen to him when he looks like he's 7 years old.

I loved this fun manga! Jimmy is a smart character, and I liked the supporting characters and their rocky relationships. I was laughing through several of the scenes, and I was intrigued by the mysteries. The art work is good, and I liked the design of the different characters.
I will definitely be reading more from this series!