I fly to Asia once a month. I spend more time in Japan in the last 10 years then I have in the Bay Area where I live. I feel naked without a sports coat in Toky

I fly to Asia once a month. I spend more time in Japan in the last 10 years then I have in the Bay Area where I live. I feel naked without a sports coat in Tokyo. It is just not normal. And that is slacking as you should have a suite. For a flight that coat maybe with jeans, but the shirt had buttons and a collar. On JAL when you get onboard every business class seat has a hanger in it. You put you coat on and they take them and hang them up. The premium economy and economy have a hook of back of the seat in front of you for a jacket. I can be a bit of a primadona here however because I also think that men in suites should only wear shirts with cuff links... but to each their own.