What's next -- and where?
Well..., I could suggest a place... off the Oregon or Washington coast... a 9.0 to a 10.0 earthquake... the Cascadia Subduction Zone... (it's about due...).
I believe Tokyo and Yokohama are unfortunately going suffer the destructive and economically disrupting effects of their version of the 'big one', similar to the Great Kanto Quake of 1923 (below). When is the question.