"a little bit"
Because it was only a reference. And you do know Ukyo Kodachi writes the anime, right?
He only confirmed the arc to be canon.
Not the whole anime and not everything that happened during this Arc.
"This chapter is connected to the anime a little bit"...90% filler, 10% cannon. It was "mentioned".
"This chapter is connected to the anime a little bit"...90% filler, 10% cannon. It was "mentioned".

100% canon, as he wrote the arc. The trolls are coming out of the bridges today..
Is that some sort of rule?That doesn't make it "canon" just cause he wrote it outside of the manga.
He's the anime story supervisor not writer, some other guy does the writing for the anime.Because it was only a reference. And you do know Ukyo Kodachi writes the anime, right?