I would need it for 3 weeks? I would take it from when I live Tokyo on 30th of March, have it until the end? Thoughts?
Itinerary
Starts March, ends April
26-30 Tokyo
30-05 Kyoto (Himeji + Kanazawa for a day each)
05-07 Osaka
07-10 Fukuyama (Hiroshima + Okunoshima a day each? Something like that)
10-13 Yokohama (Fuji for a day)
13-21 Tokyo