Tokyo Banana
This banana cream cake is a recommended souvenir when you leave Tokyo. 

Tokyo Banana
TOKYO BANANA 東京ばな奈

You can easily find it in many places around Tokyo such as department stores, souvenir shops at main stations, bus terminals and airports.

A 8-pack of TOKYO BANANA 東京ばな奈 costs 1029 yen. (including 8% tax)
It should be eaten within 7 days of purchase for freshest results.
Tokyo Banana
Since I have bought it so often, I cannot remember how many times I’ve bought it and eaten it. It is tasty!
This cake is good. If you have no ideas what to buy for your family and friends, you can’t go wrong with bringing them TOKYO BANANA 東京ばな奈.

Website
https://www.tokyobanana.jp (English is available.)