The Simpsons reside in Springfield. It's a town that's full of surprises and funny incidents. Although it's fictional, it feels very real to fans of the show.
I'd suggest checking out your local library. Sometimes they have a collection of manga available for borrowing. Or, you could search on bookstore websites, as they might offer digital or physical copies of such manga.
Sometimes there might be. It often depends on the author's style and the intended audience. Some mature content could be included to add depth or realism to the story.
Sometimes, libraries have digital collections of manga that you can access for free. But the selection might be limited. Another option could be looking for fan-made translations on certain forums, though this isn't always reliable or legal.