I have already answered some of your questions here

For others,

"I heard from people who went to Japan that there is almost to no stores who accept bitcoin"

We actually have enough stores that accept Lightning in Tokyo. Check out BTC Map and you will see some options in Tokyo.

Btw, the reason why merchant adoption in Japan is still very slow is mostly an unfavorable tax system on crypto. Unless we have some sort of tax exemption of small amount of bitcoin payments, most people won't use Bitcoin as a payment imo.

"doing a meetup there with other Noderunners who will join me to Japan?"

-> Absolutely. Join the Diamond Hands telegram group and let me know when you visit Japan.

"how is the inflation? Are people feeling it?"

-> Inflation and yen depreciation is a really big issue now in Japan and people are finally really feeling its pain now. I mean I have most of wealth in Bitocin myself and more or less protected, but I still feel the pain of weak yen and inflation.

I sometimes wonder how most people are making ends meet or why people are still not mad at the government or about the weak yen. If this was in other countries, we'd already be seeing riots on the street already!