The shorter version ends after Nara. Tokyo and the Kyoto–Nara pairing already provide a strong introduction.
Add a neighbourhood day in Tokyo, more time in Kyoto and a less hurried castle visit.
Every transfer is allocated separately from the sightseeing days. Arrival at the first base and departure from the last are outside this outline.
Tokyo
Explore the city by neighbourhood rather than crossing it repeatedly to collect isolated attractions. Mix a major museum or garden with ordinary streets, shops and food. Keep an arrival day light so the city does not become an exercise in navigating while tired.
Suggested base: Tokyo. Allow 4 days here.
Kyoto Temples
Group temples and gardens geographically. Pick a small cluster for the morning, then leave time to read the craft in a gate, veranda, stone arrangement or screen of trees. Avoid treating every temple as another item in a queue.
Suggested base: Kyoto. Allow 4 days here.
Nara
Give the temple precincts and museum collections room to breathe. Look at the scale of the great timber buildings and the relationship between sacred architecture, parkland and the town. An overnight in Nara is an option, not a requirement of this plan.
Suggested base: Kyoto or Nara. Allow 2 days here.
Himeji Castle
Approach the castle slowly enough to understand the defensive layout. Compare the distant white silhouette with the experience of narrow routes, gates and timber interiors. Leave a separate block for the adjoining garden if it is part of your chosen visit.
Suggested base: Himeji, Kobe or Osaka. Allow 2 days here.