I love how butthurt you guys get when a Japanese author writes a story and incorporates Japanese cooking. Personally, I'm pretty neutral about Japanese food since I respect it, but I can't eat most of it (I'm ketogenic).
But I'm way happier to see people positively portraying Japanese food rather than European or American food. The Japanese diet is super healthy. Meanwhile bread, pasta, cakes, potatoes are no problem for you Yankees because you don't even know what real food is supposed to taste like.