>>2794894
sorry for the rushed thoughts
the other thing too is are you going to land in HND (assuming) and take a Shinkansen right to Osaka/ Kyoto?
The easy thing if you are spending a week in Tokyo is that there's a lot to see, and it's frankly cheaper than Kyoto (not Osaka though), but way more friendly for a first time visitor.
Like you will want to spend more time in Tokyo because of the large amount of things to do (it's huge) alone, whereas Osaka in my opinion felt more like a working city, with some stuff to do by Dotonbori and a few shopping streets, but more mundane.
Kyoto has temples and a lot to see, but you can see a lot of it in a few days (1 week max in my opinion, and if you are shorter on cash it is more expensive, even just the accommodation tax.)
I also don't know if you want day trips, but if you are going to be in Kyoto/Osaka you should definitely see Nara, do not get food for the deer though they will bite you (t. bit)
If you want to see more of the Japan seen in photos, I would go to Shinjuku/Shibuya and walk around the city. It's incredibly safe. Like get out of Tokyo St., walk to the Imperial Palace/Garden thing, and just walk in the direction of the Tokyo Tower (Eiffel Tower) like its the North Star, you'll see stuff. Same with walking from Shibuya to Gotokuji, it's not only a pretty walk but you cross over a lot of more local shopping areas with good cafes and food.
Kyoto is a lot of tourism, and its only industry is tourism. Osaka felt more city to me outside of Dotonburi area, and the Aquarium is great, and Universal is cool (my gf loved it), but outside of that it just has less to do than Tokyo while feeling a lot of the same (It isn't a full week this third trip for that reason).
One more thing but these are the things I would do again if I could / visiting first time.
Gotokuji Temple (tokyo), Nara (osaka/kyoto), Arashiyama (kyoto), Hamarikyu Gardens (Tokyo), Rainbow bridge, Museum of Housing, Fuji Q