I've never traveled before so I'm fairly retarded. I've done a lot of research already but figured I'd ask some questions anyways. Planning to go with a friend in late January 2027 for around 15 days, booking hotels in Tokyo, Kyoto, Sapporo, and maybe Osaka while also visiting Nara.

Is it easy to get a flight from Osaka to Sapporo as a clueless gaijin? If I climb Mount Kurama alone will I be destroyed by brown bears? Any recommendations on places to visit, get food, and buy Japanese masks?