I checked the itinerary here.
https://wanderlog.com/plan/qgzrcuyuzlokluah/trip-to-japanIt turns out that Sakai was in Osaka.
I haven't been there, but if you don't have time, I think you should cut Sakai and spend your time in central Osaka.
The National Museum Of Japanese History is near Narita Airport, so if I go, it will be the first or last day.
However, I will arrive at 15:00 on the first day, so I won't be able to make it in time.
Because it closes at 16:30.
The museum usually closes at 17:00.
I didn't know if Jodoji Ishibashicho on January 18th actually existed.
If you have time from Higashiyama Jisho-ji, please try walking the Philosopher's Path. (It may be difficult to walk all the way, so please use the bus in that case)
i think january 21st is going to be hard.
There are many good places in Kanazawa, so it would be better to go sightseeing in Kanazawa on this day.
I don't have any plans for January 24th, so if I put Matsumoto in, why not make January 23rd Matsumoto, and January 24th Karuizawa and Kusatsu?
You can go to Matsumoto via Nagano Station.
What if the schedule for January 25th is postponed to January 26th?
Asakusa should be visited in the morning of January 27th or between January 12th and January 15th.