Hallo Abandon.....
As you were radical and cut out Kanazawa, you could also do it with Takayama (to visit Hida Folk?) and Shirakawa (it's also beautiful, but you travel a long time to see it and leave in 1 hour!!!), not that they're not worth it It's worth it, they are interesting but they are not suitable for those who have little time, you could leave them for a next trip.
See here and if you really can't miss it.... visit them:
Takayama:
https://www.japan-guide.com/e/e5900.htmlShirakawa-go:
https://www.japan-guide.com/e/e5950.htmlIf you move, you could enjoy it more in other places and you wouldn't have to be stressed.
Tokyo - (4 nights) to
Kyoto - (5 nights) including a day in Nara) to
Hiroshima / Miyajima (2 nights)
- "Possible one night in Miyajima (?)" yes, but from Miyajima to Hiroshima it is only 10 minutes by ferry + 20 minutes by bus to the Hiroshima railway station!)
In addition to changing hotels, you would have your bags, if you haven't already sent them elsewhere)
In the MORNING to
Himeji - (it's 1 hour and a half to Himeji) you can visit Himeji in 4 hours...
OSAKA - (1 night) visit Osaka the night after Himeji you won't regret it, the small alleys, the lighting of Minami (Namba) and many other entertainments in Osaka.
https://www.japan-guide.com/e/e2157.htmlEarly in the MORNING of the next day I
If you are in Osaka you have to go to NAMBA and take another train)
Koyasan - (1 night) to
Odawara (2 nights) from Kyasan to Odawara is almost 6 hours of travel!!! If you arrive in the afternoon, at the station you would buy Hakone Freepass and visit the castle and/or the city.
https://www.odakyu.jp/english/passes/hakone/ (see everything you can see and do, from the volcano, the pirate ship to seeing Mount Fuji from the cable car if the weather is good!!!! !
The next morning I would use the Pass, do the entire program and GO BACK to Odawara (I would do the same program as the trip to the Lake) to
Haneda airport - after breakfast from Odawara to Haneda is another 2 hours by train.....
Navitime is very good, but it only reports on JR trains!!!! the Pass for your trip and due to the price increase in October it is not worth it, but you can also calculate the price at JR and see if it is worth it for you.
https://japantravel.navitime.com/en/area/jp/route/I always use Google Maps, it gives options for trains and/or buses.
To do Kyoto/Nara/Himeji/Hiroshima/Miyajima etc you could use the Kansai Wide Area Pass and most importantly...it also gives you the right to go to Kyasan!!!!!
https://www.japan-rail-pass.com/de/transfer/japan-rail-pass/regional/k...(Please, I took this route twice before Covid, you should check when purchasing the wide pass if it still gives you the right to go to Koyasan)