Running Late for a Reservation in Japan
Step out of the pedestrian flow, send one short message or call, and give the new arrival time before explaining the full reason.
Hub
You do not need to solve the whole trip. You need the next practical fix.
When a small travel problem happens in Japan, step out of the flow first. Then choose the nearest legitimate fix: message staff, use a clear eating or rest area, buy an umbrella, save battery, store luggage, or ask at a staffed point.
If you are here now
Step out of the pedestrian flow, send one short message or call, and give the new arrival time before explaining the full reason.
Look for an eat-in area, public seating where food is clearly allowed, your hotel room, or the place that sold the food if staff points you there.
Move to the edge first, then look for public benches, station waiting areas, department store seating, cafes, parks, or your hotel lobby.
Step under a non-blocking covered edge, then choose between a convenience store, drugstore, station shop, department store, or waiting out a short shower.
Reduce power use immediately, save the key address offline, then choose a staffed place, paid charging option, hotel, cafe with clear power access, or station facility.
Stop buying for the moment, consolidate bags at the edge of the flow, then choose delivery, coin lockers, hotel drop-off, luggage storage, or a suitcase purchase.
Do not keep blocking the locker aisle. Move to the side, check nearby locker banks, staffed storage, luggage counters, hotel drop-off, or delivery.