What I'd like to write about is how halloween is celebrated in Japan. Surprisingly it is but not to the magnitude as in America. In the States, people spend outrageous amounts of money on costumes and decorations. There are activities leading up beforehand like pumpkin hunting, carving, corn mazes, haunted houses, ghost hunts, etc... Halloween in America might be on October 31st but it occupies the whole month of October.
In Japan, it's present but it seems to be a holiday more for adults. My only guess for this is Japanese who have spent time abroad in the US or Canada. There are costume parties and everything in between but you have to be in a larger city to get the full effect.
Door to door 'trick or treating' isn't found. Kind of sad.