Yes it is very likely to happen again. It happened 70 years ago in same place it was just not as bad.
The Earthquake doesn't just be gone. it has effects on japan like the devastation and destruction that the earthquake has done and earthquakes don't disappear but they go away an happen again depending on movement in the earths crust if the crust slips under japan again there will be another earthquake
A tsunami hit japan after the earthquake.
In Japan
The 8.9 Japan Earthquake
Friday
In march 2011
East of Sendai
earthquake in ocean
The epicenter of the earthquake was offshore, close to Sendai, Japan.
The plates moved so this can occur the earthquake.
The Northeastern Coast.
Before you were born