t/s osaka vs tokyo

The Tower of the Sun in Expo Park reopened, I forgot how psychedelic the interior is:

https://www.youtube.com/watch?v=iPe4QDdJMlk

Hoping to head to Japan for the first time (COVID-dependent) at the end of February. Traveling with my partner and our 5-year-old son. Two weeks, and thinking of maybe splitting it 50/50 between Tokyo and Osaka. Plus maybe one night in the countryside? Is it foolish to just choose a couple places? Will we regret having so much time in Osaka (vs Kyoto or Hiroshima or more Tokyo)?

Really we just like wandering around and random cultural stuff and food and nature, but we have to rein in our ambitions given the involvement of a very active kid. A lot of travellers do one night each in a whole string of wonderful-sounding places, but I feel like it's probably not worth the travel time and frenzy?

the cutural contrast is starkest between Tokyo and Osaka (rather than say Tokyo and Kyoto) so those two places make sense. Esp if you're into the more current, 'funky' side of Japanese culture, Osaka makes sense over Kyoto, which has more history...

You won't regret staying in Osaka too long as it's a great springboard for day trips to Kyoto or Nara - Nara would be a great place to take the kid (if they like Deers) :-)