Question: what to do autumn in japan?
Answer: Autumn Leaves. It's all about autumn leaves from October to November (Autumn leaves in Hokkaido is starting from September!!). ... 
Meiji Jingu Gaien Ginkgo Festival. ... 
Hiking. ... 
Tokyo Ramen Show. ... 
Halloween. ... 
6. Japanese Gardens. ... 
Kochia Carnival. ... 
Sumo Grand Tournament.