Tokyo 2020: Things Associated With Japan

While the Olympics in 2020 in Tokyo are going on, what things have to do with Japan?

Japan Things:
 * Tokyo Tower
 * Tanabata
 * Koi
 * Fugu
 * Sushi
 * Sumo Wrestling
 * Square Watermelons
 * Tokyo City Hall
 * Mt. Fuji
 * Youkai
 * Tokusatsu
 * Anime
 * J-Pop
 * J-Metal
 * J-Funk
 * Samurai
 * Ninja
 * Hiroshima Bombings
 * Rainbow Bridge of Tokyo
 * Akihabara
 * The word "Onore"