The delegate of Japan totally agree with the delegate Paulo from North Korea about building walls of 50 meters high (tsunamis can be huge and water can reach higher when crash with the wall) an 20 meters large because: there is not enough material, money etc; the country will lose all romance since it will be considered as a jail; the Japanese people will never allow any psychopath people to build those walls.
The delegate of Japan confirms that the best way to counter any earthquake in the best conditions if to have the Taipei 101 tower anti-earthquake structure, and so to add this structure characteristics to most of the important buildings they can .(here to check the Taipei characteristics
So the delegate of Japan came up with a good idea, which will probably be the best.
The delegate of Japan will propose to add a extra height to certain buildings that will be called "safety buildings" in case of tsunamis (the best would be to add this extra height to all buildings but the founds will not allow this), so they can reach a height equal or superior to 25 meters. This will also say that those buildings will be able to include more jobs (because of the shopping center they could create for example), shops, or anything possible. More, the concern countries will have to include also to reinforce the structure of the safety buildings with strong quality materials so the power of the wave will not destroy the pillars of the buildings (there are a lot of possible materials not hyper expensive).
These safety buildings should be present every 1km to 5km from each other so people would have time to get in and reach the top of the buildings (the lasts floors should be empty so more people can be "stored" inside (also, there should be good elevators and pretty big so more people can get in at the same time, without forgetting that the scales (when the elevator is going up, everybody is going to be completely scared, so there is another way).
Also, scientists are searching as they can to find how are tsunamis created, why are they created, and are there any possible solution to stop the tsunami production without killing the Earth.
The last point, a very powerful satellite will be needed to check when any tsunamis are going to hit any countries in Asia. This satellite will be in permanent rotation with the Earth so it will always stay in front of Asia. A strong signal will be sent in case of tsunami alert (the signal should be sent to all concerned country/island as early as possible), which will prevent the population to get in the safety buildings and be safe.
This will be the main solution to the Tsunamis-earthquake issue.