Train/bus suggestions

Hi all! Can someone please suggest what would be the best approach to public transport for me based on my plans? Not sure whether it’d be better for me to get pass or just buy individual tickets for each. Some of these routes are quite expensive so I would love some insights! Thanks

Here’s my travel plan:

Tokyo (Asakusa) to My Fuji return
Tokyo to Matsumoto
Matsumoto to Kamikochi return
Matsumoto to hakuba return
Matsumoto to osaka
Osaka to Hiroshima return
Osaka to kyoto
Kyoto to tokyo