Halloween costumes and trick-or-treating has Western roots,...

ODAIBA, TOKYO, JAPAN - 2015/10/25: Halloween costumes and trick-or-treating has Western roots, but in recent years Halloween has become popular in Japan. Wookies, batwomen, unicorns, vampires and vampirettes, not to mention a smattering of cosplayers decked out in new rags. Japan is a serious contender in the halloween costume game. Large events are held the last week of October, from Tokyo Halloween at Odaiba, to Shibuya Costume Street Party. Originally the only Halloween events in Japan were when bands of westerners took over the Yamanote Line in Tokyo around Halloween midnight trying to spook ordinary commuter passengers for fun. The fun has caught on. (Photo by John S Lander/LightRocket via Getty Images)