Complying with onigiri’s request, I will write about Halloween situation in Japan. Halloween is getting one of popular event in Japan, but not as much as like Christmas. Most people who have a Halloween party tend to enjoy disguise which is like Kosupure, and it is not common yet to do “trick or treat” visiting houses.
There is a similar ceremony with Halloween in Japan called “Obon (お盆)”. Obon is the Festival of the Dead which mainly indicates for 3 to 5 days since August 15th,. It up to firms but, most of them generally takes the term off as a summer vacation.
During Obon, people go back to their home town. As its ceremony, people call deceased to their home and hold a memorial service by reciting a sutra. Besides, family pays a visit to ancestor’s grave. People clean the grave and place offerings. It depends on family but my family offerings ancestor’s favorite food like sweets and Sake. After the ceremony, Bon-Odori, Bon dance is held at a temple. The dance is a slow dance and people dance wearing Yukata, an informal cotton kimono for summer wear. Bon-Odori is said as an imitation that dead people who relieved of a pain at a hell are dancing with pleasure.
Originally, Obon was considered to come from Buddhism, but it contains less religious factor actually. Consequently, a lot of Japanese people tend to travel especially to abroad using this term. If you want to visit Japan, it maybe better to avoid these days since Narita air port would be congested.