i wouldn’t go at night time but i wouldn’t worry too much. The police station is close and there are cops everywhere. Also, you are a foreigner so its ok i think.
Yes, i have lived here for 25 years. I have taken that bus at night time.
Japan’s "Safe" and the rest of the world’s "safe" is different. If we say something is "safe" it means you can go there and walk out without a MAJOR problem. Someone taking your bag can happen ANYWHERE in any country.
99% of the time you won’t have a problem. Just be happy that foreigners are not hassled in Canada.