@JavelinJoe
It's getting real old to have people question these things. Why ever would a Japanese manga, made in Japan, by Japanese people, sold in Japan, to Japanese people, include a Japanese protagonist who wants the comforts from Japan in this new, foreign, unfamiliar world which is usually based on Western origins? It's not like we have stories of people going East and wanting Western comforts, right? Ah, we do.
Accept that it's cultural that they like the comforts of home and want them with them wherever they go. They're not heading to the Western-inspired fantasy world to glorify Western culture, which is all anyone seems to complain about around here while trying to act like it's not what they're complaining about. It's about bringing a little piece of home with them while they explore the new world.
Consider how often (to the point of insanity) that we see the need for soy sauce, baths, mayo, katana, and rice. Because these are the things a Japanese audience will ALL know and resonate with, the desire for these things when they aren't available. Sure there are those who don't like these, but that's not the cultural understanding - those people are outliers, not part of the figure. Going with one of those makes the character different enough from the intended audience there needs to be a reason to accept it, it practically needs to be a story point as to why this person doesn't seem like they share 'everyman' Japanese traits.
Source: Me, who as a younger self while in Okinawa, mostly wanted hamburgers and normal 'American' food, missing out on many Japanese dishes. The desire for the comfort of familiarity was strong.