[MMM]

Osaka is just as hard to get around in as Tokyo. There is even a similar loop line that circles the city.

I don't know how old you are so am not sure what kind of nightlife you want, but there are tons of things to do

OSAKA
Osaka Science and Technology Museum
Osaka Castle
Namba District (Ame-mura, Nampa-bashi)
Shopping in Umeda

NARA
Nara Dai-butsu
Nara Park

KYOTO
Kinkakuji
Mount Kyoto
Monkey Mountain
Kyoto International Manga Museum

TAKARAZUKA
Osamu Tezuka Manga Museum

KOBE
Merikan Park
Old Foreigner's Homes tour
Aquarium at Suma

And that is just scratching the surface