The movie Ronin indeed takes inspiration from the graphic novel. They share core elements and themes, but the movie might have made some adaptations for the big screen.
Lego Ninjago graphic novels are like visual adventures. They show the action and fun of Lego Ninjago in a format that's easy to follow. They can be stand-alone stories or part of a series, giving you more of the Lego Ninjago goodness you enjoy.
The 47 Ronin story has indeed been made into a comic book. It typically features detailed illustrations and a narrative that stays true to the original legend, while adding some creative elements for visual appeal.
To some extent, it's true. However, like many historical tales passed down through generations, there are likely exaggerations and additions to make the story more dramatic and engaging.
The basic framework of the 47 Ronin story is true. However, in its retelling through history and various forms of media, some details might have been changed or exaggerated for dramatic effect.