Osaka is Japan's food capital and an excellent base for a Kansai loop. Three days covers the city itself plus one day trip — usually Kobe or Himeji. The pace is friendly, the food obscenely good, and the locals more boisterous than anywhere else in Japan.
Kuromon Market for breakfast (sashimi, grilled scallops, sea urchin). Shinsaibashi-suji covered shopping street for the daytime browse. Lunch okonomiyaki at Mizuno or Chibo in Dotonbori. Afternoon at Osaka Castle. Evening dinner in Dotonbori with the Glico running-man sign and the Don Quijote wheel — kushikatsu, takoyaki, and a beer along the canal.
Kobe (30 min): Kitano-cho European-style historic district, Sannomiya shopping, the harbour with Meriken Park. Lunch Kobe beef teppanyaki — Steakland Kobe for ¥5-6,000 set, Wakkoqu or Mouriya for true splurge. Or Himeji (45 min by shinkansen): Himeji Castle (Japan's most photogenic, UNESCO, white heron). Half-day at the castle plus Koko-en garden, return to Osaka by evening.
Morning: Tennoji Park and Shitenno-ji Temple (Japan's first Buddhist temple). Shinsekai retro neighbourhood with Tsutenkaku Tower for lunch kushikatsu at Daruma or Yaekatsu. Afternoon: depending on your interest — USJ half-day (only if you have park tickets pre-bought) or Umeda Sky Building rooftop for the panorama. Depart from Itami or Kansai International.
This is a generic plan that works for most travellers. Use Panor's AI Japan trip planner to customise it — adjust pace, add or remove neighbourhoods, swap day trips, account for dietary restrictions, or factor in cherry-blossom or autumn-foliage timing. The planner uses interactive maps and can export the itinerary to your phone.