I really liked the show when I was a kid - and being a fun little episodic crime show is IMO probably better than trying to give any kind of actual resolution to a lot of the silliness going on. One of the times filler is just like, enjoyable. Its still a fun mystery, and its always something new or different from the last one.
Its quite formulaic, but the mysteries are fun, and the silly side moments of "Jimmy needs to basically frame his incompetent guardian for solving the crime" and "Jimmy's girlfriend knows that Jimmy is the kid, but can't really prove it and for reasons Jimmy needs to convince her otherwise".
Definitely felt weird that first episode with them having regular japanese names instead of weird dubs names like Jimmy or Rachel.