Hi Good Day!
If i reached Nagoya at 14 jan and stay around this area or Osaka/Kyoto/Kobe and then go for Shirakawago for the night lit event, after which i proceed to Hiroshima and stay there for a night to visit the museum as well as Miyajima. Back to Osaka for few days, proceed to Nagano for the monkeys, Matsumoto Castle, stay in Zenkoji for a day or two, proceed to Yamagata stay there for a night to Mt Zao and Kamo Aquarium, then to Nikko for a night stay and to Tokyo for the rest of the trip.
my trip would most likely be 9-12days. I should get a jr pass? at which point should i activate my jr pass? are there any places that i should visit at this period or places i should avoid?