TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the Diet Building in Tokyo, Japan, March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missing after the great earthquake of Tohoku which caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the Diet Building in Tokyo, Japan, March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missing after the great earthquake of Tohoku which caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the Wako deptarment store located in Ginza, the most luxurious shopping district of Tokyo, Japan, on March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: Tokyo tower is light down on March 11, 2015, in Tokyo, Japan. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the Diet Building in Tokyo, Japan, March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missing after the great earthquake of Tohoku which caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the Diet Building in Tokyo, Japan, March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missing after the great earthquake of Tohoku which caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the Wako deptarment store located in Ginza, the most luxurious shopping district of Tokyo, Japan, on March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: Tokyo tower is light down on March 11, 2015, in Tokyo, Japan. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: The Japan Flag is seen flying at half-mast on the entrance of the Imperial Hotel in Tokyo, Japan, March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunamli on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: A woman reads support messages in a store window of Wako building on March 11, 2015, in Tokyo, Japan, located in Ginza, the most luxurious shopping district of Tokyo, Japan, on March 11, 2015. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)

TOKYO, JAPAN - MARCH 11: People are reading support messages in a window store of wako building on March 11, 2015, in Tokyo, Japan, located in Ginza, the most luxurious shopping district of Tokyo. Japan commemorates the 4th anniversary of the death of 15,000 people who where killed and more than 3,000 missingafter the great earthquake of Tohoku hich caused a devastating tsunami on March 11th, 2011, and caused the Fukushima nuclear disaster. (David MAREUIL - Anadolu Agency)