>>531385537
Imagine you made a fanfiction. Then imagine saying "Dragon Ball Tree of Might is canon to my fanfiction". Then that becomes true. the Turles movie happened in your fanfiction purely because you said so and you are the author so your word is law. The Turles movie wasn't made with your fanfiction in mind but it's canon to your fanfic.
That's what Toyo did with the Broly movie.