Sit down, fellow AVGeek. Let me tell you a story~
Jokes aside, I follow quite a bit of JP aviation enthusiasts. And I found some stores through them~
ANA FESTA
ANA has their own merch brand, "ANA FESTA," spread throughout several airports, including Tokyo Haneda and Narita. Their products range from models (obviously), plushies, keychains, to even their own catering they serve on flights (I think it depends on the airport). When it comes to models, they mostly sell 1/200 and 1/500 scale, but do have 1/400. There is a vlogger I follow that showcases one of the stores at Haneda Airport.
Main website:
ANA Festa gift shops are operated by the ANA Group, the “blue wings” of Japan. There are shops located in 34 airports across the country and they carry a wide selection of famous regional food items and souvenirs, as well as useful travel goods. Some of the shops are also duty free. Let ANA...
www.anafesta.com
Video: (There are no English subtitles in his videos, so you might have to guess)
Blue Sky Shop (JALux)
From what I gathered, Blue Sky is a separate brand, but sells products under the Japan Airlines name due to their partnership (someone correct me if I'm wrong). They have more stores at more airports compared to ANA, and they sell some higher quality items. Like before, the models sold there are mostly 1/200 and 1/500 scale, but have some 1/400.
Main website:
JALUXが運営する空港店舗BLUE SKY(ブルースカイ)は、人気の空弁や空パン、お土産や空スイーツなどを取り揃えて皆さまをお待ちしております。
bluesky.jalux.com
Video: (Location is at Haneda Airport)
TOP-GUN Shop
This is basically right up your alley. They sell all sorts of models of almost any airline at any scale. Including military aircraft and other accessories. Finding the location, however, was difficult. From what I gathered, they had 2 or 3 stores (all in Tokyo, I believe). However, one of them is closed down. So, your safe bet is to try this store out as shown in the video below.
Main website: https://www.top-gun.jp/
Video: (Location is
Aeon Kaihin Makuhari, Tokyo)
Have an amazing trip to Japan!