Does it make sense to add additional cities if I only have 8 days in Japan

Hi all,

So I’m planning to go to Japan this December (11 to 19) as a solo traveler, this would be my second time, right now I’m only planning on going to Tokyo, and enjoying the Christmas vibes and cool weather, I have some ideas of what I’m planning to do in Tokyo, but because I’ve been there before (not long, just 4 days the first time) I’m afraid I’m going to get bored by the end of my trip, so I started to think maybe I should add another city to go to, I remember I loved Kyoto but is it worth it to go back to it.

My question is, should I spend my whole trip in Tokyo? Or should I include Kyoto for a couple of days, or maybe a day trip to Nikko or Kamakura?