i’m pretty sure it’s canon since you can see it’s a page from a book EDIT: CANON CANON I’VE READ IT WHAT DO YOU MEAN DON’T FINISH THAT SENTENCE?!?!?! IF HE MEANT NO HE WOULD SAY IT?!?
( also this is unrelated but i found a cool archive of official 4komas , some of them have some really cute phoenix + edgeworth interactions , but either way it’s fun to read through ( https://akechiscans.wordpress.com/tag/4koma-kingdom/ ))
