The magic is that nobody is wasted here, not the kids, not the old people, not the quiet suburban streets where nothing dramatic ever happens until it does. These aren't condescending mysteries solved by children for our amusement; they're real problems that need both the energy kids have and the patience only someone who's lived sixty years can bring. You watch a retired salaryman and a neighborhood kid actually need each other to understand what's happening, and that need is the whole show. The mysteries themselves are small enough to fit in a single block, which means the real mystery is how a thirteen-episode series about children and pensioners investigating lost cats and neighborhood feuds becomes impossible to look away from. Slice of life it may be, but it has the bone-deep comfort of watching people who don't have much time left find something that still matters.
In present-day Japan, a band of retirees takes on the small mysteries that crop up around their community, and the local children pitch in to help them get to the bottom of each one. The show pairs a mystery setup with a slice-of-life pace, keeping its puzzles close to home and centered on everyday neighborhood life.