[Sangetsu]

In Tokyo you can start at Harajuku station. Yes, you can see the cosplayers if you go on Sunday, but I don't like the Sunday crowds there, standing among the crowds of foreign tourists and camera wielding perverts. If you are going to Harajuku to shop, pick a weekday, it'll be much less crowded.

From Harajuku you can walk to Omotesando (where there are nicer shops), and then on to Shibuya station and Hachiko. You should have dinner at Chanko Dining, it's probably the most delicious restaurant in Shibuya (though definitely not the most expensive). It was opened by the famous sumo wrestler Wakanohana, a former Yokuzuna, their number is 03-6415-4527. The restaurant is walking distance from Shibuya station.

You should also visit Aoyama cemetery while you are in the Shibuya area, my gf says that Hachi's grave is located here.