Is it possible that he is not actual Matsutake?
I remembered reading in some manga, where someone thought they found Matsutake but it wasn't.
If I'm not mistaken the eater have hallucinations.
There's many mushrooms with...OTHER effects...that look like edible ones. We don't really see many spore-based abilities from edible mushrooms, so I'd guess this Master is a...I dunno. Fucks-Up-Your-Brain-If-You-Eat-It-Idiot mushroom instead of a Delicious-Perfect-Basically-Bread-That-Grows-By-Itself mushroom, and they just look identical.
There's many mushrooms with...OTHER effects...that look like edible ones. We don't really see many spore-based abilities from edible mushrooms, so I'd guess this Master is a...I dunno. Fucks-Up-Your-Brain-If-You-Eat-It-Idiot mushroom instead of a Delicious-Perfect-Basically-Bread-That-Grows-By-Itself mushroom, and they just look identical.
That's a really good point. I tried looking into matsutake mushrooms and the only thing I could find was that apparently they have a strong, spicy aroma, but not much besides that. My guess is that either the manga is leaning into the mushroom's defining characteristic or he's lying about what type of mushroom he is