Tokyo

One neighborhood a day, with the train as the plan. See the cost before you book the flight.

Good to know

Go: Base yourself on one train line. Crossing the city twice a day wastes the good hours.
Skip: Skip a themed cafe if the neighborhood is the thing you came for.
Eat: A standing sushi counter or a ramen shop with a ticket machine. Order what the board is pushing.
Entry: Japan waives visas for a lot of passports, and asks others to apply first. Check the stay length for yours.
Timing: June through September is hot, and the rain arrives in bursts. April, November are easier.

Senso-ji before the shops
Free
Asakusa · morning
Go at opening. The gate photo is free. The souvenirs can wait.
Yanaka on foot
Free
Yanaka · morning
The cemetery path and the shopping street are the same walk.
Standing sushi
$28
Asakusa · afternoon
Point at two pieces, then stop. A third round is a meal you did not plan.
A museum ticket
$12
Yanaka · afternoon
One museum. Tokyo has more, and you will not see them well if you stack them.
Shibuya crossing, then leave
Free
Shibuya · evening
Cross it once. The useful evening is in the lanes behind the station.
A small bar in Shimokitazawa
$22
Shimokitazawa · evening
Cover charges start after nine. Ask before you sit.
Yoyogi or a shrine garden
Free
Shibuya · morning
An hour outside. The city plan works better after that.
Ramen at the counter
$12
Shimokitazawa · afternoon
The ticket machine is the menu. Cash still works when the card does not.

A typical cost in US dollars, so you can decide before you open a booking site. Not a live fare.