Japan popular / unbeathen path during summer end 2024

Hello little bit about me my name is Sam I live in the Nertherlands i'm 23 years old, male, my intrest are history, fitness, music, cars architecture,
21 augustus till 10 september

my rouge plan is to stay in tokyo for the first 4 days then travel via train to the historic city of Kanazawa for 3 days then 2 days in nagoya where i will then travel to okoyama for 1 day i will rent a car and drive or by train to shikoku on of Japans smallest main island's with it beautiful inland see bridges where i will stay in Matsuyama for 4 days im planning on doing loads of outdoor activity's there the last day i will cycle the shimanami kaido all the way to onomichi where i then will stay 1 day in Tomonoura historic town and the last 5 days in osaka where my flight leaves what expect lots of castles, boring history, musuems, food, and more food, and outdoor activity's to eat more food

Only my plane ticket is set in stone the hotel booking is not yet done but will soon i am flexibele but my must see are Tokyo Kanazawa Shikoku and Osaka this will be my first Trip it will not be perfect but that's what will make it fun :) i'm also cool with meeting up.